Minecraft: 1.16.5
More player Models: v0.3.1a
Pehkui: 3.1.0+1.16.5-forge.jar
Forge: 36.2.28

Game crashes moments after the loading process begins. Gives this crashlog: https://pastebin.com/nGFvVgNg

Why it happened? I'm unsure, from the last time I played with a working pack a few days ago I updated some mods:

could be any one of these.

or it could've just been an issue with the update itself. I'm unsure. Since I had to scroll down in the curseforge window to find an update for pekhui. I'm not sure if it was bugged or not, but the issue went away when I backdated more player models to 0.3.0a.

The crash looks like, it is from Pehkui. In the attached screenshot you have pehkui disabled, so that's why it works.

it was showing as enabled in curseforge once I turned player models back on. o.o also I had turned it off and custom player models to check the pack was loading without them.

edit: ok, seems I must've crossed some wires or something when I attempted backdating player models thinking it suddenly worked. X_x