Version: 1.18.2-18.3.2

https://paste.gg/p/anonymous/f2a967fbb0544674b71caddf874c4ba2

update to latest

What skill book did you try to render?

Alright just did, same issue in 18.3.3: https://paste.gg/p/anonymous/51b1db5b5475430b98f59dc79c035bb1

Try deleting rubidium and oculus, both of them seem to have caused an unexpected crash

the skill book was 'dodge'

Well, all I can know from the crash report is it doesn't have a skill stored in item NBT but tried to render skill description UI.

Bruh what did you do ?!

I tweaked some code to check if the skill NBT is valid. But please check what exactly went wrong to avoid potential problems.