After upgrade of flowable 6.8.0, we are not able to execute models

Hello everyone,

After upgrade of flowable from 6.7.2 to 6.8.0, we are not able to run any of the existing models.

Can you please help us resovle the issue.

2023-01-18 04:54:56.215 ERROR 31151 — [o2-443-exec-222] o.f.c.r.e.BaseExceptionHandlerAdvice : Unhandled exception

org.flowable.common.engine.api.FlowableException: couldn’t instantiate class com.sap.dlm.flowable.DLMScriptExecutionListener
at org.flowable.common.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:139) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.defaultInstantiateDelegate(AbstractClassDelegate.java:64) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.defaultInstantiateDelegate(AbstractClassDelegate.java:75) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.instantiateDelegate(AbstractClassDelegate.java:49) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.ClassDelegate.getExecutionListenerInstance(ClassDelegate.java:136) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.ClassDelegate.notify(ClassDelegate.java:101) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.listener.ListenerNotificationHelper.executeExecutionListeners(ListenerNotificationHelper.java:81) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.AbstractOperation.executeExecutionListeners(AbstractOperation.java:78) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.AbstractOperation.executeExecutionListeners(AbstractOperation.java:69) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.executeSynchronous(ContinueProcessOperation.java:154) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.continueThroughFlowNode(ContinueProcessOperation.java:125) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.run(ContinueProcessOperation.java:88) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.AbstractEngineConfiguration.lambda$new$0(AbstractEngineConfiguration.java:195) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:130) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:114) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:72) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:26) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:105) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.spring.SpringTransactionInterceptor.lambda$execute$0(SpringTransactionInterceptor.java:57) ~[flowable-spring-common-6.8.0.jar:6.8.0]
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.3.24.jar:5.3.24]
at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:57) ~[flowable-spring-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:51) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.RuntimeServiceImpl.startProcessInstance(RuntimeServiceImpl.java:792) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.runtime.ProcessInstanceBuilderImpl.start(ProcessInstanceBuilderImpl.java:265) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.rest.service.api.runtime.process.ProcessInstanceCollectionResource.createProcessInstance(ProcessInstanceCollectionResource.java:328) ~[flowable-rest-6.8.0.jar:6.8.0]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.24.jar:5.3.24]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.24.jar:5.3.24]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:696) ~[servlet-api.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.24.jar:5.3.24]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[servlet-api.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-websocket.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:352) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:117) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:131) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:85) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:164) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:202) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:107) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:93) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:117) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:62) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:361) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:225) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:190) ~[spring-security-web-5.8.1.jar:5.8.1]
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267) ~[spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:96) ~[spring-boot-actuator-2.7.6.jar:2.7.6]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126) ~[spring-boot-2.7.6.jar:2.7.6]
at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64) ~[spring-boot-2.7.6.jar:2.7.6]
at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101) ~[spring-boot-2.7.6.jar:2.7.6]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119) ~[spring-boot-2.7.6.jar:2.7.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.24.jar:5.3.24]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[catalina.jar:9.0.71]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[catalina.jar:9.0.71]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[catalina.jar:9.0.71]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) ~[catalina.jar:9.0.71]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[catalina.jar:9.0.71]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[catalina.jar:9.0.71]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-coyote.jar:9.0.71]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-coyote.jar:9.0.71]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.Nio2Endpoint$SocketProcessor.doRun(Nio2Endpoint.java:1703) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.AbstractEndpoint.processSocket(AbstractEndpoint.java:1190) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SecureNio2Channel$HandshakeWriteCompletionHandler.completed(SecureNio2Channel.java:121) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SecureNio2Channel$HandshakeWriteCompletionHandler.completed(SecureNio2Channel.java:114) ~[tomcat-coyote.jar:9.0.71]
at java.base/sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:129) ~[na:na]
at java.base/sun.nio.ch.Invoker.invokeDirect(Invoker.java:160) ~[na:na]
at java.base/sun.nio.ch.UnixAsynchronousSocketChannelImpl.implWrite(UnixAsynchronousSocketChannelImpl.java:759) ~[na:na]
at java.base/sun.nio.ch.AsynchronousSocketChannelImpl.write(AsynchronousSocketChannelImpl.java:382) ~[na:na]
at java.base/sun.nio.ch.AsynchronousSocketChannelImpl.write(AsynchronousSocketChannelImpl.java:399) ~[na:na]
at org.apache.tomcat.util.net.SecureNio2Channel.handshakeInternal(SecureNio2Channel.java:302) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SecureNio2Channel.handshake(SecureNio2Channel.java:222) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.Nio2Endpoint$SocketProcessor.doRun(Nio2Endpoint.java:1680) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.AbstractEndpoint.processSocket(AbstractEndpoint.java:1190) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SecureNio2Channel$HandshakeReadCompletionHandler.completed(SecureNio2Channel.java:104) ~[tomcat-coyote.jar:9.0.71]
at org.apache.tomcat.util.net.SecureNio2Channel$HandshakeReadCompletionHandler.completed(SecureNio2Channel.java:97) ~[tomcat-coyote.jar:9.0.71]
at java.base/sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:129) ~[na:na]
at java.base/sun.nio.ch.Invoker$2.run(Invoker.java:221) ~[na:na]
at java.base/sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:113) ~[na:na]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-util.jar:9.0.71]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-util.jar:9.0.71]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-util.jar:9.0.71]
at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]
Caused by: org.flowable.common.engine.api.FlowableClassLoadingException: Could not load class: com.sap.dlm.flowable.DLMScriptExecutionListener
at org.flowable.common.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:89) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:136) ~[flowable-engine-common-6.8.0.jar:6.8.0]
… 146 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/apache/http/client/methods/HttpUriRequest
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:495) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:474) ~[na:na]
at org.flowable.common.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:328) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.common.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:70) ~[flowable-engine-common-6.8.0.jar:6.8.0]
… 147 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.http.client.methods.HttpUriRequest
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1412) ~[catalina.jar:9.0.71]
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1220) ~[catalina.jar:9.0.71]
… 152 common frames omitted

2023-01-18 04:56:58.628 ERROR 31151 — [o2-443-exec-216] o.f.c.r.e.BaseExceptionHandlerAdvice : Unhandled exception

org.flowable.common.engine.api.FlowableException: couldn’t instantiate class com.sap.dlm.flowable.DLMScriptExecutionListener
at org.flowable.common.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.java:139) ~[flowable-engine-common-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.defaultInstantiateDelegate(AbstractClassDelegate.java:64) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.defaultInstantiateDelegate(AbstractClassDelegate.java:75) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.AbstractClassDelegate.instantiateDelegate(AbstractClassDelegate.java:49) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.ClassDelegate.getExecutionListenerInstance(ClassDelegate.java:136) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.helper.ClassDelegate.notify(ClassDelegate.java:101) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.bpmn.listener.ListenerNotificationHelper.executeExecutionListeners(ListenerNotificationHelper.java:81) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.AbstractOperation.executeExecutionListeners(AbstractOperation.java:78) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.AbstractOperation.executeExecutionListeners(AbstractOperation.java:69) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.executeSynchronous(ContinueProcessOperation.java:154) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.continueThroughFlowNode(ContinueProcessOperation.java:125) ~[flowable-engine-6.8.0.jar:6.8.0]
at org.flowable.engine.impl.agenda.ContinueProcessOperation.run(ContinueProcessOperation.java:88) ~[flowable-engine-6.8.0.jar:6.8.0]

Hey @kongearun

Seems your are missing the dependency for the apache http. with 6.8.0 flowable-http module changed the maven dependency to optional.

Also you are using the HttpUriRequest directly in your code. You should provide your own dependency to guarantee that the class is properly imported within your module.

Greetings

Christopher

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Christopher, Many thanks for the reply but please forgive my ignorance…

Could you please let me know apache http dependency file which i should be looking for … i have installed “httpcore-4.4.16.jar”… but the issue still persists… :frowning:

Hey @kongearun , the class is not available in the httpcore lib, but in httpclient:

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.4.16</version>
</dependency>

Note: There are newer versions of httpclient available: https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient

1 Like