Hi Team,
Currently we are using the Camunda 7.17 and planning to migrate to 7.21 version. Getting below error when trying to update from 7.19 to 7.20, the same error persist in 7.21 version as well.
I have referred Update from 7.19 to 7.20 | docs.camunda.org and also make sure the camunda-juel-7.20.0.jar is part of the library. But still getting same error.
Using SpringBoot: 3.4.0.
2025-01-02 14:49:26.522 ERROR [dispatcherServlet]:175 - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.util.concurrent.CompletionException: java.lang.ExceptionInInitializerError] with root cause
java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImpl
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[?:?]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[?:?]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?]
at org.camunda.bpm.impl.juel.jakarta.el.FactoryFinder.newInstance(FactoryFinder.java:43) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.FactoryFinder.find(FactoryFinder.java:135) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.ExpressionFactory.newInstance(ExpressionFactory.java:140) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.ExpressionFactory.newInstance(ExpressionFactory.java:110) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.ELUtil.<clinit>(ELUtil.java:60) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.BeanELResolver.invoke(BeanELResolver.java:430) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.jakarta.el.CompositeELResolver.invoke(CompositeELResolver.java:198) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.AstMethod.invoke(AstMethod.java:91) ~[camunda-juel-7.20.0.jar!/:7.20.0]
at org.camunda.bpm.impl.juel.AstMethod.eval(AstMethod.java:75) ~[camunda-juel-7.20.0.jar!/:7.20.0]