basically what title says
Yes i've researched issue, only 1 other person had the issue, with parrot being perched on their shoulder, and disabling shaders worked for them, while it did not for my friend.
They're on Curseforge launcher, V2.13.1 of BCG+ with cobblemon,
as cf only allows java 17 to be ran, that is what version of it, the pack is not modified in any way, on Bisect hosted server.
Their crash report after turning shaders off ( have one before if needed) https://mclo.gs/ilSmugB
other players are not affected, server is running fine, can provide server log if needed