not joining to the server

[MahadRegent]

General Information

https://dump.viaversion.com/76cffa9cf27d47955f7f1a4dc443a0ccddeec8072ef02a7976356e57a068d1e5
https://pastebin.com/raw/7hwU9r2S
https://pastebin.com/raw/8vQLHcBr

Bug Description

not joining to the server mc.aresmine.ru with error

Steps to Reproduce

not joining to the server with error. Server ip mc.aresmine.ru client version mc 1.21 viafabricplus changed version 1.19.4, and all server versions are not joinable.

1. solve captcha
2. register account /register 1234567l
3. not joining to hub, have a error

Expected Behavior

You will be kicked , when will be joining to this server (mc,aresmine.ru