SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/camunda.jar!/BOOT-INF/lib/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/camunda.jar!/BOOT-INF/lib/slf4j-jdk14-1.7.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
2019-12-24 05:58:33.350  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$56afff4e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

 ____                                 _         ____  ____  __  __
/ ___| __ _ _ __ ___  _   _ _ __   __| | __ _  | __ )|  _ \|  \/  |
| |   / _` | '_ ` _ \| | | | '_ \ / _` |/ _` | |  _ \| |_) | |\/| |
| |__| (_| | | | | | | |_| | | | | (_| | (_| | | |_) |  __/| |  | |
\____/\__,_|_| |_| |_|\__,_|_| |_|\__,_|\__,_| |____/|_|   |_|  |_|

  Spring-Boot:  (v2.2.2.RELEASE)
  Camunda BPM: (v7.12.0)
  Camunda BPM Spring Boot Starter: (v3.4.0)

2019-12-24 05:58:34.001  INFO 1 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2019-12-24 05:58:34.158  INFO 1 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2019-12-24 05:58:34.158  WARN 1 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/application/default": Connection refused (Connection refused); nested exception is java.net.ConnectException: Connection refused (Connection refused)
2019-12-24 05:58:34.162  INFO 1 --- [           main] com.tomtom.flow.CamundaApplication       : No active profile set, falling back to default profiles: default
2019-12-24 05:58:35.935  INFO 1 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=29c8fb6d-1f2b-3f8a-a9b0-da4a99e09715
2019-12-24 05:58:36.274  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'com.tomtom.flow.client.FlowClient' of type [org.springframework.cloud.openfeign.FeignClientFactoryBean] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-12-24 05:58:36.379  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-12-24 05:58:36.408  INFO 1 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$56afff4e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-12-24 05:58:36.750  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-12-24 05:58:36.766  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-12-24 05:58:36.766  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.29]
2019-12-24 05:58:36.855  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-12-24 05:58:36.855  INFO 1 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2649 ms
2019-12-24 05:58:36.884  INFO 1 --- [           main] .c.b.s.b.s.r.CamundaJerseyResourceConfig : Configuring camunda rest api.
2019-12-24 05:58:36.912  INFO 1 --- [           main] .c.b.s.b.s.r.CamundaJerseyResourceConfig : Finished configuring camunda rest api.
2019-12-24 05:58:37.525  INFO 1 --- [           main] org.camunda.bpm.spring.boot              : STARTER-SB040 Setting up jobExecutor with corePoolSize=3, maxPoolSize:10
2019-12-24 05:58:37.528  INFO 1 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'camundaTaskExecutor'
2019-12-24 05:58:37.634  INFO 1 --- [           main] org.camunda.bpm.engine.cfg               : ENGINE-12003 Plugin 'CompositeProcessEnginePlugin[genericPropertiesConfiguration, camundaProcessEngineConfiguration, camundaDatasourceConfiguration, camundaJobConfiguration, camundaHistoryConfiguration, camundaMetricsConfiguration, camundaAuthorizationConfiguration, CreateAdminUserConfiguration[adminUser=AdminUserProperty[id=admin, firstName=admin, lastName=admin, email=admin@admin.com, password=******]], failedJobConfiguration, CreateFilterConfiguration[filterName=All tasks], disableDeploymentResourcePattern, eventPublisherPlugin]' activated on process engine 'default'
2019-12-24 05:58:37.660  INFO 1 --- [           main] org.camunda.bpm.spring.boot              : STARTER-SB020 ProcessApplication enabled: autoDeployment via springConfiguration#deploymentResourcePattern is disabled
2019-12-24 05:58:37.661  INFO 1 --- [           main] o.c.b.s.b.s.event.EventPublisherPlugin   : EVENTING-001: Initialized Camunda Spring Boot Eventing Engine Plugin.
2019-12-24 05:58:37.662  INFO 1 --- [           main] o.c.b.s.b.s.event.EventPublisherPlugin   : EVENTING-003: Task events will be published as Spring Events.
2019-12-24 05:58:37.662  INFO 1 --- [           main] o.c.b.s.b.s.event.EventPublisherPlugin   : EVENTING-005: Execution events will be published as Spring Events.
2019-12-24 05:58:37.666  INFO 1 --- [           main] o.c.b.s.b.s.event.EventPublisherPlugin   : EVENTING-007: History events will be published as Spring events.
2019-12-24 05:58:37.939  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2019-12-24 05:58:38.291  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.ibatis.reflection.Reflector (jar:file:/camunda.jar!/BOOT-INF/lib/mybatis-3.4.4.jar!/) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.apache.ibatis.reflection.Reflector
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2019-12-24 05:58:43.424  INFO 1 --- [           main] org.camunda.bpm.engine                   : ENGINE-00001 Process Engine default created.
2019-12-24 05:58:43.506  INFO 1 --- [           main] org.camunda.bpm.spring.boot              : STARTER-SB011 skip creating initial Admin User, user does exist: UserEntity[id=admin, revision=3, firstName=admin, lastName=admin, email=admin@admin.com, password={SHA-512}07AHjZFS7JUsvDBfD9B/8O1h8QnI9hlfEays92W/KVyxYfl15h5NfDnrzwwdasb6Hp39mpKLPRlxhC7t3sq9CQ==, salt=NeaD8UddciOt5A1n3t7Sig==, lockExpirationTime=null, attempts=0]
2019-12-24 05:58:44.043  WARN 1 --- [           main] o.s.c.n.a.ArchaiusAutoConfiguration      : No spring.application.name found, defaulting to 'application'
2019-12-24 05:58:44.049  WARN 1 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2019-12-24 05:58:44.049  INFO 1 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2019-12-24 05:58:44.057  WARN 1 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2019-12-24 05:58:44.057  INFO 1 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2019-12-24 05:58:45.037  INFO 1 --- [           main] o.c.b.s.b.s.w.f.LazyInitRegistration     : lazy initialized org.camunda.bpm.spring.boot.starter.webapp.filter.LazySecurityFilter@1fedf0a4
2019-12-24 05:58:45.038  INFO 1 --- [           main] o.c.b.s.b.s.w.f.LazyInitRegistration     : lazy initialized org.camunda.bpm.spring.boot.starter.webapp.filter.LazyProcessEnginesFilter@7bd96822
2019-12-24 05:58:45.344  INFO 1 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 14 endpoint(s) beneath base path '/actuator'
2019-12-24 05:58:45.504  INFO 1 --- [           main] org.camunda.bpm.container                : ENGINE-08026 No processes.xml file found in process application 'camundaApplication'
2019-12-24 05:58:45.509  INFO 1 --- [           main] org.camunda.bpm.container                : ENGINE-08050 Process application camundaApplication successfully deployed
2019-12-24 05:58:45.540  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2019-12-24 05:58:45.545  INFO 1 --- [           main] com.tomtom.flow.CamundaApplication       : Started CamundaApplication in 13.75 seconds (JVM running for 14.757)
2019-12-24 05:58:45.554  INFO 1 --- [           main] org.camunda.bpm.engine.jobexecutor       : ENGINE-14014 Starting up the JobExecutor[org.camunda.bpm.engine.spring.components.jobexecutor.SpringJobExecutor].
2019-12-24 05:58:45.556  INFO 1 --- [ingJobExecutor]] org.camunda.bpm.engine.jobexecutor       : ENGINE-14018 JobExecutor[org.camunda.bpm.engine.spring.components.jobexecutor.SpringJobExecutor] starting to acquire jobs
2019-12-24 05:58:55.620  INFO 1 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-12-24 05:58:55.620  INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2019-12-24 05:58:55.632  INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 12 ms
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
Warning: Nashorn engine is planned to be removed from a future JDK release
2019-12-24 11:06:50.098 ERROR 1 --- [nio-8080-exec-3] org.camunda.bpm.engine.context           : ENGINE-16004 Exception while closing command context: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null

org.camunda.bpm.engine.exception.NullValueException: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[na:na]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.generateException(EnsureUtil.java:394) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:55) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:50) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.ensureExecutionInitialized(ExternalTaskEntity.java:461) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.getExecution(ExternalTaskEntity.java:450) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.externaltask.LockedExternalTaskImpl.fromEntity(LockedExternalTaskImpl.java:163) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:79) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:40) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:46) ~[camunda-engine-spring-7.12.0.jar!/:7.12.0]
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:44) ~[camunda-engine-spring-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.externaltask.ExternalTaskQueryTopicBuilderImpl.execute(ExternalTaskQueryTopicBuilderImpl.java:60) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.executeFetchAndLock(FetchAndLockHandlerImpl.java:268) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.tryFetchAndLock(FetchAndLockHandlerImpl.java:251) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.addPendingRequest(FetchAndLockHandlerImpl.java:316) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockRestServiceImpl.fetchAndLock(FetchAndLockRestServiceImpl.java:38) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at jdk.internal.reflect.GeneratedMethodAccessor80.invoke(Unknown Source) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$VoidOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:159) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:99) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108) ~[spring-boot-actuator-2.2.2.RELEASE.jar!/:2.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

2019-12-24 11:06:50.174  WARN 1 --- [nio-8080-exec-3] org.camunda.bpm.engine.rest.exception    : ENGINE-REST-HTTP500 org.camunda.bpm.engine.exception.NullValueException: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.generateException(EnsureUtil.java:394)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:55)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:50)
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.ensureExecutionInitialized(ExternalTaskEntity.java:461)
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.getExecution(ExternalTaskEntity.java:450)
	at org.camunda.bpm.engine.impl.externaltask.LockedExternalTaskImpl.fromEntity(LockedExternalTaskImpl.java:163)
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:79)
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:40)
	at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28)
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:46)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:44)
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70)
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
	at org.camunda.bpm.engine.impl.externaltask.ExternalTaskQueryTopicBuilderImpl.execute(ExternalTaskQueryTopicBuilderImpl.java:60)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.executeFetchAndLock(FetchAndLockHandlerImpl.java:268)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.tryFetchAndLock(FetchAndLockHandlerImpl.java:251)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.addPendingRequest(FetchAndLockHandlerImpl.java:316)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockRestServiceImpl.fetchAndLock(FetchAndLockRestServiceImpl.java:38)
	at jdk.internal.reflect.GeneratedMethodAccessor80.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$VoidOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:159)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:99)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:834)

2019-12-24 11:06:50.517 ERROR 1 --- [nio-8080-exec-9] org.camunda.bpm.engine.context           : ENGINE-16004 Exception while closing command context: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null

org.camunda.bpm.engine.exception.NullValueException: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:na]
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[na:na]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.generateException(EnsureUtil.java:394) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:55) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:50) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.ensureExecutionInitialized(ExternalTaskEntity.java:461) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.getExecution(ExternalTaskEntity.java:450) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.externaltask.LockedExternalTaskImpl.fromEntity(LockedExternalTaskImpl.java:163) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:79) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:40) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:46) ~[camunda-engine-spring-7.12.0.jar!/:7.12.0]
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:44) ~[camunda-engine-spring-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.impl.externaltask.ExternalTaskQueryTopicBuilderImpl.execute(ExternalTaskQueryTopicBuilderImpl.java:60) ~[camunda-engine-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.executeFetchAndLock(FetchAndLockHandlerImpl.java:268) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.tryFetchAndLock(FetchAndLockHandlerImpl.java:251) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.addPendingRequest(FetchAndLockHandlerImpl.java:316) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.camunda.bpm.engine.rest.impl.FetchAndLockRestServiceImpl.fetchAndLock(FetchAndLockRestServiceImpl.java:38) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at jdk.internal.reflect.GeneratedMethodAccessor80.invoke(Unknown Source) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$VoidOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:159) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) ~[jersey-common-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680) ~[jersey-server-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205) ~[jersey-container-servlet-core-2.29.1.jar!/:na]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:99) ~[camunda-engine-rest-jaxrs2-7.12.0.jar!/:7.12.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108) ~[spring-boot-actuator-2.2.2.RELEASE.jar!/:2.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar!/:5.2.2.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.29.jar!/:9.0.29]
	at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

2019-12-24 11:06:50.520  WARN 1 --- [nio-8080-exec-9] org.camunda.bpm.engine.rest.exception    : ENGINE-REST-HTTP500 org.camunda.bpm.engine.exception.NullValueException: Cannot find execution with id 504b3d6b-263d-11ea-b009-aedc91f750c8 for external task 504b3d6d-263d-11ea-b009-aedc91f750c8: execution is null
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.generateException(EnsureUtil.java:394)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:55)
	at org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull(EnsureUtil.java:50)
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.ensureExecutionInitialized(ExternalTaskEntity.java:461)
	at org.camunda.bpm.engine.impl.persistence.entity.ExternalTaskEntity.getExecution(ExternalTaskEntity.java:450)
	at org.camunda.bpm.engine.impl.externaltask.LockedExternalTaskImpl.fromEntity(LockedExternalTaskImpl.java:163)
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:79)
	at org.camunda.bpm.engine.impl.cmd.FetchExternalTasksCmd.execute(FetchExternalTasksCmd.java:40)
	at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28)
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:46)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
	at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:44)
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70)
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
	at org.camunda.bpm.engine.impl.externaltask.ExternalTaskQueryTopicBuilderImpl.execute(ExternalTaskQueryTopicBuilderImpl.java:60)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.executeFetchAndLock(FetchAndLockHandlerImpl.java:268)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.tryFetchAndLock(FetchAndLockHandlerImpl.java:251)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockHandlerImpl.addPendingRequest(FetchAndLockHandlerImpl.java:316)
	at org.camunda.bpm.engine.rest.impl.FetchAndLockRestServiceImpl.fetchAndLock(FetchAndLockRestServiceImpl.java:38)
	at jdk.internal.reflect.GeneratedMethodAccessor80.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$VoidOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:159)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:99)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1591)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:834)