"Upload failed: Make sure what you're uploading is an image." when uploading an image (PNG file)

[ScriptingSausage (Oob)]

I can’t post in bug reports, so I didn’t know where to put this but here.

When I try to upload an image (a PNG file), it gives me this error:

It happens for any image.

Anyone know why this is happening?

[Haosi]

Same thing is happening to me, don’t know why. After a while of retrying it worked for some reason, but now I’m having the same issue with another PNG

[ScriptingSausage (Oob)]

Looks like it’s fixed for me now I’m not sure what happened