When using an Activiti process with an embedded subprocess in Alfresco, the "My completed tasks" view shows a red error and the logs display a Nullpointer exception.
NOTE: This is a simple demo process containing an embedded subprocess. See also attached process diagram "diagramEmbeddedSubprocess.png"
3. In the "My Tasks" dashlet select "Start Workflow"
7. From the filters on the left panel select "Completed"
As the process is following BPMN standard and the workflow itself is running and completing fine, the "Completed" filter should show completed workflows without any errors.
Workaround: Don´t use an embedded subprocess but design the process without them.