Thanks for the suggestion. I fixed the yaml files however the tasks are still queued and not being processed.
To clarify, the /_ah/start error occurs only if I force the task to run from the Task Queues viewer. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/MJngtxIzjf4J. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.