Swimming crashes minecraft

[RedPhantom69]

Minecraft 1.21.11 fabric
When I try to swim my minecraft crashes.
Log: https://mclo.gs/jwByBSY

[tr7zw]

Hm, there is no indicator that its Firstperson Mod. Something is emptying the render stack, probably because one mod cancels something from another mod. Check with different mod combinations what is causing this.

[RedPhantom69]

The crash only happened when firstperson mod was installed, after I uninstalled it it didnt happen anymore. Maybe some other mod interferred with it

[gddanger]

im having the exact same problem, but it also crashes when i crawl with trapdoors and between blocks when using elytra.
i found out that this mod was the issue by disabling each of my mods one by one.

[tr7zw]

Again, it's caused by another mod in combination with fpm. Without knowing the other mod, I can't do anything.

[gddanger]

i disabled every mod i have except for fpm and it still had the problem. also im using feather client if that may help

[tr7zw]

Feather is a mod, then report that to feather. There is no crashing issue with normal fabric mod setups.