I am running into the same issue.
Here is what I see in my logs:
21:28:33,783 ERROR [stderr] (Thread-24) java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: could not locate named parameter [userId]
21:28:33,783 ERROR [stderr] (Thread-24) at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:206)
21:28:33,783 ERROR [stderr] (Thread-24) at org.jbpm.task.service.TaskServiceSession.getTasksAssignedAsPotentialOwnerByStatusByGroup(TaskServiceSession.java:1011)
I followed the below link and got around the above issue:
https://community.jboss.org/message/738279?tstart=0
However, I ran into the following issue:
21:37:22,714 ERROR [stderr] (Thread-26) javax.persistence.NoResultException: No entity found for query
21:37:22,714 ERROR [stderr] (Thread-26) at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:104)
21:37:22,714 ERROR [stderr] (Thread-26) at org.jbpm.task.service.TaskServiceSession.getTaskByWorkItemId(TaskServiceSession.java:644)
What are we missing?
Thanks,
Sid.