Help, I got a non-sense aggressive message!

Hello, My main question is, what should I do in this situation? I took a screenshot but I don´t know what to do now, where can I report it?


Pd: I don´t know who this player is and I haven´t seen him.


Thanks, beforehand.

You can report players to a GM through an in-game ticket, there's more info on reporting here and a full list of rules here.

Thanks! the info helped me.