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could not install activity 5.14 on apache tomcat 7

Question asked by truongpm on Feb 28, 2014
Latest reply on Mar 10, 2014 by jbarrez
Hi forum,
I'm a newbie in activity. I have try install activiti explorer on apache tomcat 7 but can not log into http://localhost:8080/activity-explorer.
Please help me to solve this proble. Thanks. The tomcat log is:
Feb 28, 2014 12:40:06 PM org.apache.catalina.session.StandardSession writeObject
WARNING: Cannot serialize session attribute explorerApp for session 9F8B1B592B05024B8CFCAE5D19248B68
java.io.NotSerializableException: org.activiti.workflow.simple.converter.json.SimpleWorkflowJsonConverter
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
   at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
   at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
   at org.apache.catalina.session.StandardSession.writeObject(StandardSession.java:1671)
   at org.apache.catalina.session.StandardSession.writeObjectData(StandardSession.java:1077)
   at org.apache.catalina.session.StandardManager.doUnload(StandardManager.java:430)
   at org.apache.catalina.session.StandardManager.unload(StandardManager.java:351)
   at org.apache.catalina.session.StandardManager.stopInternal(StandardManager.java:516)
   at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
   at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5655)
   at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
   at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1575)
   at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1564)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
   at java.lang.Thread.run(Thread.java:662)

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