Crash Log: https://pastebin.com/JfSiEQHv

Regular Log:
latest.zip
(raw file uploaded due to being too big to use on pastebin.)

Duplicate of #4294

I have the same issue, I posted it here #4294
How did you find out it crashes with kubejs?

Because using just kubejs+quark works fine

The crashing happens when I add KubeJS to my modpack, and I think it started when I tried to add a new recipe via Kubejs. I specifically tried to add a stonecutter recipe.

Then report it to the kubejs discord, they answer pretty quickly

I already did. They said the bug is not on their end.