5.8 Problem -Exception for process which used to work in 5.6

[gnevzmaja]

After deploying a process which worked without problems in Activiti 5.6, Im getting following exception after attempting to complete the first task.
I am not a vaadin expert so I guess someone with more experience can tell what is happening here

Exceptioncom.vaadin.event.ListenerMethod$MethodExceptionCause: org.activiti.engine.ActivitiException: Unknown property used in expression   at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)   at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)   at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1193)   at com.vaadin.ui.Button.fireClick(Button.java:539)   at com.vaadin.ui.Button.changeVariables(Button.java:206)   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1299)   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1219)   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:735)   at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)   at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)   at java.lang.Thread.run(Thread.java:722)Caused by: org.activiti.engine.ActivitiException: Unknown property used in expression   at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:55)   at org.activiti.engine.impl.el.UelExpressionCondition.evaluate(UelExpressionCondition.java:37)   at org.activiti.engine.impl.bpmn.behavior.ExclusiveGatewayActivityBehavior.leave(ExclusiveGatewayActivityBehavior.java:63)   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:65)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:115)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:497)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:492)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:332)   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:102)   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:51)   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)   at org.activiti.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.leave(AbstractBpmnActivityBehavior.java:37)   at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signal(UserTaskActivityBehavior.java:74)   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(ExecutionEntity.java:315)   at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskEntity.java:149)   at org.activiti.engine.impl.cmd.CompleteTaskCmd.completeTask(CompleteTaskCmd.java:63)   at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:57)   at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:28)   at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)   at org.activiti.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:144)   at org.activiti.explorer.ui.task.TaskDetailPanel$5.buttonClick(TaskDetailPanel.java:353)   at sun.reflect.GeneratedMethodAccessor141.invoke(Unknown Source)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:601)   at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)   … 22 more‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Im attaching the process in case someone wants to take look at it


Kind regards,
gnevzmaja

[gnevzmaja]

I think i found answer to my problem in another thread

Hi,

The Activiti Explorer uses the form properties approach, and no longer the .form html definitions.
The formKey is still supported if you want to develop your own form rendering as described in the user guide.

Best regards,