NullPointerException error when running a process instance migrated from jbpm 5 to BPM Suite 6
Issue
We migrated our active process instance from jbpm 5.x to BPM Suite 6 and when we run our process we have the following exception:
Caused by: java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:118)
at org.drools.persistence.info.WorkItemInfo.getWorkItem(WorkItemInfo.java:116)
at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalGetWorkItem(JPAWorkItemManager.java:213)
at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:141)
at org.drools.core.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:75)
at org.drools.core.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:35)
at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)
What could be wrong?
Environment
- Red Hat JBoss BPM Suite
- 6.x
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