Thread:MightyUke416/@comment-33419246-20180203183004/@comment-26485526-20180210214026

I'm not even sure, to be honest with you. Check the file type of your image maybe, because that's the only thing I can think of.

On this wiki, I know you can upload images that are: .png, .jpg, .gif

If it's not any of those, that might be your problem.