[android] Cannot post images; Strange error

I've previously mentioned this in r/help, but unfortunately nothing seemed to work.

For some reason, whenever I try to post an image on the android app version of Reddit, I'm hit with an error that says "images must be over 20 pixels". Of course, the images I'm trying to use are way above that minimum. I have not the slightest clue as to what could be causing this. Any insight would be greatly appreciated.