1.20.1 - NeoForge

I've isolated the error message because my log is ridiculously long; I'm unsure as to whether this error is the source of an ongoing issue with my worlds corrupting during loading (but not during creation).

verdant.txt

Here's a longer log (may or may not be caused by Verdant)

nokeydimension.txt

Nevermind, figured out the corruption was related to end mods.