23-Nov-2021 15:11:35.285 SEVERE [Thread-4] org.camunda.commons.logging.BaseLogger.logError ENGINE-14019 Exception during job acquisition An exception occurred in the persistence layer. Please check the server logs for a detailed message and the entire exception stack trace. org.camunda.bpm.engine.ProcessEngineException: An exception occurred in the persistence layer. Please check the server logs for a detailed message and the entire exception stack trace. at org.camunda.bpm.engine.impl.util.ExceptionUtil.wrapPersistenceException(ExceptionUtil.java:263) at org.camunda.bpm.engine.impl.util.ExceptionUtil.doWithExceptionWrapper(ExceptionUtil.java:257) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.executeSelectList(DbSqlSession.java:111) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.selectList(DbSqlSession.java:103) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectListWithRawParameter(DbEntityManager.java:182) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:174) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:170) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:159) at org.camunda.bpm.engine.impl.persistence.entity.JobManager.findNextJobsToExecute(JobManager.java:238) at org.camunda.bpm.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:66) at org.camunda.bpm.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:44) 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.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) at org.camunda.bpm.engine.impl.interceptor.CommandCounterInterceptor.execute(CommandCounterInterceptor.java:35) at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) at org.camunda.bpm.engine.impl.jobexecutor.SequentialJobAcquisitionRunnable.acquireJobs(SequentialJobAcquisitionRunnable.java:164) at org.camunda.bpm.engine.impl.jobexecutor.SequentialJobAcquisitionRunnable.run(SequentialJobAcquisitionRunnable.java:80) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLNonTransientConnectionException: No operations allowed after connection closed. ### The error may exist in org/camunda/bpm/engine/impl/mapping/entity/Job.xml ### The error may involve org.camunda.bpm.engine.impl.persistence.entity.JobEntity.selectNextJobsToExecute ### The error occurred while executing a query ### SQL: select RES.ID_, RES.REV_, RES.DUEDATE_, RES.PROCESS_INSTANCE_ID_, RES.EXCLUSIVE_ from ACT_RU_JOB RES where (RES.RETRIES_ > 0) and ( RES.DUEDATE_ is null or RES.DUEDATE_ <= ? ) and (RES.LOCK_OWNER_ is null or RES.LOCK_EXP_TIME_ < ?) and RES.SUSPENSION_STATE_ = 1 and (RES.DEPLOYMENT_ID_ is null or ( RES.DEPLOYMENT_ID_ IN ( ? , ? ) ) ) and ( ( RES.EXCLUSIVE_ = 1 and not exists( select J2.ID_ from ACT_RU_JOB J2 where J2.PROCESS_INSTANCE_ID_ = RES.PROCESS_INSTANCE_ID_ -- from the same proc. inst. and (J2.EXCLUSIVE_ = 1) -- also exclusive and (J2.LOCK_OWNER_ is not null and J2.LOCK_EXP_TIME_ >= ?) -- in progress ) ) or RES.EXCLUSIVE_ = 0 ) LIMIT ? OFFSET ? ### Cause: java.sql.SQLNonTransientConnectionException: No operations allowed after connection closed. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:149) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.lambda$executeSelectList$1(DbSqlSession.java:111) at org.camunda.bpm.engine.impl.util.ExceptionUtil.doWithExceptionWrapper(ExceptionUtil.java:254) ... 17 more Caused by: java.sql.SQLNonTransientConnectionException: No operations allowed after connection closed. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:73) at com.mysql.cj.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:1664) at com.mysql.cj.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:1580) at jdk.internal.reflect.GeneratedMethodAccessor22.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:131) at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109) at org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:75) at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109) at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:81) at com.sun.proxy.$Proxy3.prepareStatement(Unknown Source) at org.apache.ibatis.executor.statement.PreparedStatementHandler.instantiateStatement(PreparedStatementHandler.java:86) at org.apache.ibatis.executor.statement.BaseStatementHandler.prepare(BaseStatementHandler.java:88) at org.apache.ibatis.executor.statement.RoutingStatementHandler.prepare(RoutingStatementHandler.java:59) at org.apache.ibatis.executor.BatchExecutor.doQuery(BatchExecutor.java:90) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:89) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) ... 20 more Caused by: com.mysql.cj.exceptions.ConnectionIsClosedException: No operations allowed after connection closed. at jdk.internal.reflect.GeneratedConstructorAccessor147.newInstance(Unknown Source) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.NativeSession.checkClosed(NativeSession.java:1171) at com.mysql.cj.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:573) at com.mysql.cj.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:1595) ... 39 more Caused by: com.mysql.cj.exceptions.CJCommunicationsException: The last packet successfully received from the server was 75,406,592 milliseconds ago. The last packet sent successfully to the server was 75,406,592 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. 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 com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:577) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:632) at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:948) at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:894) at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1073) at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2051) at jdk.internal.reflect.GeneratedMethodAccessor39.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.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:131) at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109) at org.apache.tomcat.jdbc.pool.interceptor.AbstractCreateStatementInterceptor.invoke(AbstractCreateStatementInterceptor.java:79) at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109) at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:81) at com.sun.proxy.$Proxy3.setAutoCommit(Unknown Source) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.setDesiredAutoCommit(JdbcTransaction.java:103) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:143) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:61) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:337) at org.apache.ibatis.executor.BatchExecutor.doQuery(BatchExecutor.java:89) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:89) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.lambda$executeSelectList$1(DbSqlSession.java:111) at org.camunda.bpm.engine.impl.util.ExceptionUtil.doWithExceptionWrapper(ExceptionUtil.java:254) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.executeSelectList(DbSqlSession.java:111) at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.selectList(DbSqlSession.java:103) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectListWithRawParameter(DbEntityManager.java:182) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:174) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:170) at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.selectList(DbEntityManager.java:150) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.filterAuthenticatedGroupIds(AuthorizationManager.java:1104) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.enableQueryAuthCheck(AuthorizationManager.java:394) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.configureQuery(AuthorizationManager.java:368) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.configureQuery(AuthorizationManager.java:408) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.configureQuery(AuthorizationManager.java:404) at org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager.configureJobDefinitionQuery(AuthorizationManager.java:673) at org.camunda.bpm.engine.impl.persistence.entity.JobDefinitionManager.configureQuery(JobDefinitionManager.java:93) at org.camunda.bpm.engine.impl.persistence.entity.JobDefinitionManager.findJobDefnitionByQueryCriteria(JobDefinitionManager.java:52) at org.camunda.bpm.engine.impl.JobDefinitionQueryImpl.executeList(JobDefinitionQueryImpl.java:171) at org.camunda.bpm.engine.impl.AbstractQuery.evaluateExpressionsAndExecuteList(AbstractQuery.java:219) at org.camunda.bpm.engine.impl.AbstractQuery.execute(AbstractQuery.java:197) 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.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) at org.camunda.bpm.engine.impl.interceptor.CommandCounterInterceptor.execute(CommandCounterInterceptor.java:35) at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) at org.camunda.bpm.engine.impl.AbstractQuery.executeResult(AbstractQuery.java:160) at org.camunda.bpm.engine.impl.AbstractQuery.listPage(AbstractQuery.java:150) at org.camunda.bpm.engine.rest.impl.JobDefinitionRestServiceImpl.executePaginatedQuery(JobDefinitionRestServiceImpl.java:99) at org.camunda.bpm.engine.rest.impl.JobDefinitionRestServiceImpl.queryJobDefinitions(JobDefinitionRestServiceImpl.java:67) at org.camunda.bpm.engine.rest.impl.JobDefinitionRestServiceImpl.getJobDefinitions(JobDefinitionRestServiceImpl.java:52) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:138) at org.jboss.resteasy.core.ResourceMethodInvoker.internalInvokeOnTarget(ResourceMethodInvoker.java:546) at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTargetAfterFilter(ResourceMethodInvoker.java:435) at org.jboss.resteasy.core.ResourceMethodInvoker.lambda$invokeOnTarget$0(ResourceMethodInvoker.java:396) at org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358) at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:398) at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:365) at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:150) at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:104) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:440) at org.jboss.resteasy.core.SynchronousDispatcher.lambda$invoke$4(SynchronousDispatcher.java:229) at org.jboss.resteasy.core.SynchronousDispatcher.lambda$preprocess$0(SynchronousDispatcher.java:135) at org.jboss.resteasy.core.interception.PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:358) at org.jboss.resteasy.core.SynchronousDispatcher.preprocess(SynchronousDispatcher.java:138) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:215) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:245) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:61) at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.engine.rest.filter.CacheControlFilter.doFilter(CacheControlFilter.java:45) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.engine.rest.filter.EmptyBodyFilter.doFilter(EmptyBodyFilter.java:101) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.webapp.impl.security.filter.headersec.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:89) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.webapp.impl.security.filter.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:177) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilterSecure(SecurityFilter.java:73) at org.camunda.bpm.webapp.impl.security.filter.SecurityFilter.doFilter(SecurityFilter.java:57) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:62) at org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter$1.execute(AuthenticationFilter.java:60) at org.camunda.bpm.webapp.impl.security.SecurityActions.runWithAuthentications(SecurityActions.java:44) at org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ... 1 more Caused by: java.net.SocketException: Broken pipe (Write failed) at java.base/java.net.SocketOutputStream.socketWrite0(Native Method) at java.base/java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:110) at java.base/java.net.SocketOutputStream.write(SocketOutputStream.java:150) at java.base/sun.security.ssl.SSLSocketOutputRecord.deliver(SSLSocketOutputRecord.java:319) at java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSocketImpl.java:1202) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at com.mysql.cj.protocol.a.SimplePacketSender.send(SimplePacketSender.java:55) at com.mysql.cj.protocol.a.TimeTrackingPacketSender.send(TimeTrackingPacketSender.java:50) at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:568) ... 121 more