com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in org.activiti.explorer.ui.form.FormPropertiesForm$1 failed.

activiti.org | 2 months ago
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    activiti.org | 2 months ago
    com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in org.activiti.explorer.ui.form.FormPropertiesForm$1 failed.
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    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.activiti.demo.rules.CreateRuleObjectDelegate.execute()
    2. org.activiti.demo
      CreateRuleObjectDelegate.execute
      1. org.activiti.demo.rules.CreateRuleObjectDelegate.execute(CreateRuleObjectDelegate.java:12)
      1 frame
    3. Activiti - Engine
      ServiceTaskJavaDelegateActivityBehavior.execute
      1. org.activiti.engine.impl.delegate.JavaDelegateInvocation.invoke(JavaDelegateInvocation.java:34)
      2. org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
      3. org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
      4. org.activiti.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:49)
      4 frames