The game crashed when I opened the creative tab of Little Tiles' items (Minecraft 1.20.1, 0.9.0-1.20-forge) https://gist.github.com/emanuele246gi/da2cbdfabc58b8634becba2a8332033b

Seems like a crash from Lightman's Currency. This has nothing to do with my mod.

By the way, I still didn't manage to see what's in that gui, is there a list of bits from all the blocks in the modpack? Because the reason it crashed is probably because Lightman's Currency doesn't add full vanilla-style blocks.

No in the LittleTiles tab there are only a few tools and white blocks.