Skin not working.

Please see, and fix this bug. 1.12.1 just got released and it’s still not working!
First, it started with a custom skin I made, with small pixels. So then I thought that it was the small pixels not working anymore so I made it again with the normal sized pixels.. that worked for a little while and now that too, won’t work or even show up! It’s quite annoying since I spent quite a while on both skins and now I can’t even enjoy them. Please fix this asap. Thankyou.