CAA json error with newly added cover art

[outsidecontext]

Please see the following thread

New 2nd cover image doesn't get processed

The artwork queue increased in size by quite a bit today and I found a bad performance issue in one of the database queries which was most likely the cause of the processing delay (now fixed). There’s currently ~5,000 events in the queue, but it should start dropping now. The release you linked is already done.