Aside from the title, I can't say I know much else. I've tried reading the crashlogs, testing certain mods by themselves, but I cant figure it out. I have 2 crash logs that may be of interest, you could probably understand it better than I can.

crash-2021-08-12_15.55.41-client.txt
crash-2021-08-12_21.08.51-client.txt

Crashed with call to vanilla method. Some other mod must be messing with rendering.
Unless you provide more information, there is nothing I can do about fixing it.

The game crashed whilst tesselating block model Error: java.util.NoSuchElementException: No value present Exit Code: -1

This happened when I pulled a fish out of the water.