[Help] Unknown text in chat and game freeze

[malemees]

Hello all!

So I dont have much to say. I thought the pic says 1000 words.
Server is S9E3
Pic is in attach.
If someone have an idea please tell me what might be a problem :)

[MentaL]

[KarLi]

can't you just figur eout where this message comes from? like when this appears, what does in gameserver logs appear? etc etc.. have to find the core source of it first