Steps:

1. I boot minecraft up
2. I get to title screen (the one that says Singleplayer, Multiplayer, and has MINECRAFT JAVA EDITION text with angle splash text)
3. I click the Wynncraft Icon button next to Multiplayer
4. Loading screen appears
5. Crash

I'm using Prism Launcher from Flatpak on Arch Linux and I ran a pacman -Syu about an hour before this.
LWJGL 3 is v3.3.2.
Minecraft 1.20.2.
Fabric 0.15.3.

https://mclo.gs/f9PW0Be
Error starts at line 2747, apparently the crash is to do with the Blur mod https://github.com/Motschen/Blur

I think you need to report this to Blur. They seem to be missing a null check.

got it