Optifine 1.14.4 doesn't want to open up even though I just installed it

I've tried reinstalling and deleting the minecraft files for it to work but it still doesn't want to get past the loading screen.

It shows this text every time:

The game crashed whilst stitching Error: dwz: Unable to fit: minecraft:burning_skull, size: 64x64, atlas: 0x0, atlasMax: 0x0 - Maybe try a lower resolution resourcepack?

I haven't switched or modified the resourcepack in any way but it still says that.