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