Cant join to server

[Crexy213]

I idk why but i cant join to my friends with that mod, i dowloaded all need mods and stil getting error, pls help (For comments, im using last maincraft version 1.21.11, mod dowloaded on my friend too)

[UpcraftLP]

Hey, please provide more details.

What version of Minecraft are you on?
What version of OkZoomer did you use?
Is the mod installed just on your client or also on the server you are connecting to?

And please attach a full log file of a failed join attempt as well.