Apigee analytics export returns internal server error (500)

[DavidWalker]

Hi there,

When issuing a valid POST request to the /analytics/export endpoint, we are constantly getting a 500 Internal Server Error response, with the payload:

{"error" : "Internal Error - Token has expired or not active yet\n" }

This exact same request had been working, but has recently started failing. 

Any ideas as to what has changed? or what we can do to fix the expired token?

Many thanks,

David