Index: engine-cdi/src/main/java/org/camunda/bpm/engine/cdi/impl/el/CdiResolver.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/engine-cdi/src/main/java/org/camunda/bpm/engine/cdi/impl/el/CdiResolver.java b/engine-cdi/src/main/java/org/camunda/bpm/engine/cdi/impl/el/CdiResolver.java
--- a/engine-cdi/src/main/java/org/camunda/bpm/engine/cdi/impl/el/CdiResolver.java	(revision c291b3757c864b5129cd5b0c99145e36bbad9587)
+++ b/engine-cdi/src/main/java/org/camunda/bpm/engine/cdi/impl/el/CdiResolver.java	(date 1627652367197)
@@ -19,6 +19,7 @@
 import java.beans.FeatureDescriptor;
 import java.util.Iterator;
 
+import javax.el.BeanELResolver;
 import javax.enterprise.inject.spi.BeanManager;
 
 import org.camunda.bpm.engine.cdi.impl.util.BeanManagerLookup;
@@ -40,8 +41,16 @@
   }
 
   protected javax.el.ELResolver getWrappedResolver() {
-    BeanManager beanManager = getBeanManager();
-    javax.el.ELResolver resolver = beanManager.getELResolver();
+    javax.el.ELResolver resolver = null;
+
+    try {
+      resolver = getBeanManager().getELResolver();
+
+    } catch (UnsupportedOperationException e) {
+      resolver = new BeanELResolver();
+
+    }
+
     return resolver;
   }
 
Index: quarkus-extension/engine/runtime/src/main/resources/META-INF/services/javax.el.ExpressionFactory
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/quarkus-extension/engine/runtime/src/main/resources/META-INF/services/javax.el.ExpressionFactory b/quarkus-extension/engine/runtime/src/main/resources/META-INF/services/javax.el.ExpressionFactory
new file mode 100644
--- /dev/null	(date 1627652367204)
+++ b/quarkus-extension/engine/runtime/src/main/resources/META-INF/services/javax.el.ExpressionFactory	(date 1627652367204)
@@ -0,0 +1,1 @@
+de.odysseus.el.ExpressionFactoryImpl
\ No newline at end of file
Index: quarkus-extension/engine/runtime/pom.xml
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/quarkus-extension/engine/runtime/pom.xml b/quarkus-extension/engine/runtime/pom.xml
--- a/quarkus-extension/engine/runtime/pom.xml	(revision c291b3757c864b5129cd5b0c99145e36bbad9587)
+++ b/quarkus-extension/engine/runtime/pom.xml	(date 1627652367191)
@@ -15,6 +15,23 @@
   <name>Camunda Platform - Quarkus Extension - Engine - Runtime</name>
 
   <dependencies>
+    <dependency>
+      <groupId>de.odysseus.juel</groupId>
+      <artifactId>juel-api</artifactId>
+      <version>2.2.7</version>
+    </dependency>
+
+    <dependency>
+      <groupId>de.odysseus.juel</groupId>
+      <artifactId>juel-spi</artifactId>
+      <version>2.2.7</version>
+    </dependency>
+
+    <dependency>
+      <groupId>de.odysseus.juel</groupId>
+      <artifactId>juel-impl</artifactId>
+      <version>2.2.7</version>
+    </dependency>
 
     <!-- Camunda dependencies -->
     <dependency>