I am reporting a problem using the latest version of Quark-r2.4-276.jar and AutoRegLib-1.6-46.jar on Minecraft 1.16.4 Forge 35.1.1 (Lastest)
Trying to use quark to connect to a vanilla server | paper spigot. Only having problems with these 2 mods, any other mod works fine on the server.

lastest.log: https://hatebin.com/swyzcqtcay
debug.log: https://hatebin.com/lqmkoumjvj
Error message: http://prntscr.com/vnysld

Server Log:

22.11 14:47:02 [Disconnect] User com.mojang.authlib.GameProfile@26307e38[id=,name=AM9327,properties={},legacy=false] (/(IP)) has disconnected, reason: Disconnected