For some images, we get HTTP 500 return code when creating a tweet with the image attached via the API.
We always get the “code: 131, message: internal error” as a response when that happens.
Reading through some “solved issues” here, this seems to be due to image processing on twitter’s side.
Do we know which kind of images we can upload and which we can’t?
All our images are checked for filesize, and are sufficiently small.