Behance uploads broken

[HeeroWingZero]

All Behance links are failing with Upload failed: (link) doesn't contain any images. Tried various links (both ones that are already posted and new ones) and they're all giving the same error.

Strangely, the posts mentioned in #5771 still give the "undefined method `[]' for nil" error rather than the error that's showing up on other posts now.