[Can't join server: error type: EXC NullReferenceException: Object reference not set to an instance of an object]

Hello and thanks alot for helping me.
 No idea how you knew from those texts that my character was corrupted, but you are a genius for me.
Your help worked. Thanks once more for your help and wish you a nice day.

[Can't join server: error type: EXC NullReferenceException: Object reference not set to an instance of an object]

Greetings.
 I am having an issue with joining into our friends server.
We've played together for quite some time, around 40 hours or so and then all of a sudden one day I couldn't join at all.
Everytime I tried to join, the console popped up with the red error message "EXC NullReferenceException: Object reference not set to an instance of an object"
 Today we tried to create a completely new server after few months of not playing, everyone can join without an issue except me, I still have the same error.
I've tried to play singleplayer and everything works there.

I've already tried:
- Deleting save files
- Deleting world files
- Veryfing integrity of game files
- Complete reinstall of the game
- Launching the game in Launcher and using it's tools to clean all the game's files
- Turning off anticheat

Logs:
Client: https://pastebin.com/Y28qcf9k
Server: https://pastebin.com/ce9SwjfW

Screenshot: https://imgur.com/a/GntjEJO