So, I was making my own mod pack, and after I installed the last mods for it, (Tectonic, Biomes O' Plenty and Terralith), the game launches normally, it only crashes when I try to generate new world.
(I suspect this has to do with the biome generation?) Anyways, here's the Debug.log and the Crash Report.

Here's the crash report.
https://pastebin.com/GkP2zH8p
 

(Edit)
Forgot the latest.log

https://pastebin.com/tF34xA0W

Edited May 28, 20242 yr by Dræn

arsadditions and arsnouveau are conflicting - try different builds of both mods until you find a working combination

It worked! Thank you, I would have never guess that was the issue!

I was also making a modpack and mine is crashing when it's generating the terrain. It gets very close to the end, and then freezes and crashes.

Here's the error code:
https://mclo.gs/fiHRPmH