I just noticed that suddenly i get an error when trying to publish something from our stand-alone publisher. To be sure I just updated its version to 2.5.3 and am using the default hook for publishing, but the same error occures:
ShotgunPublishError: Unable to complete publishing because of the following error: Could not upload file successfully, but not sure why. Path: ...lalala.PNG Url: https://lalala.shotgunstudio.com/upload/publish_thumbnail Error 0 undefined method ''for nil:NilClass, although Published File lalala.PNG (id: 20178) was created.
As the error states as well, the publish is created but is missing its thumbnail.
It could have something to do with an SSL error I got previous to this but i managed to fix that by setting an environment variable (SHOTGUN_API_CACERTS).
Any help would be very much appreciated