We have an Adapt Authoring tool server (0.8.1/2.4.0) which have had some performance issues (described in another thread).

But as I tried to export the course, the export just stops after a while.

When I look in the export folder on the server there is a zip-file that seems to be a correct export file but the AT does not download it.

I get this in the Chrome console:

origin.js?20190628095404773:233
Uncaught TypeError: Cannot read property 'message' of undefined
at Object.error (origin.js?20190628095404773:233)
at u (origin.js?20190628095404773:212)
at Object.fireWith [as rejectWith] (origin.js?20190628095404773:212)
at i (origin.js?20190628095404773:213)
at XMLHttpRequest.t (origin.js?20190628095404773:213)

/export/5b8ffcc5cee50255393045ec/5c94cb234345070789fc9de7:1
Failed to load resource: net::ERR_EMPTY_RESPONSE

I have also attached a file with the output in the server console.