Can't Connect To The Server

Hello !
Yesterday I was playing, doing a quest when suddently I timed out.

The problem is that now, I can't connect to the server. On my server list the server is "Pinging..." for a while and then it's written "Can't connect to server".
I tried to restart my game, change my minecraft version, use another connection, change the server ip in my server list but I still have the same problem.
Whenever I try to connect to the server, it says me "Internal Exception: java.io.Exception: Une connexion existante a dû être fermée par l'hôte distant" (It's in French but in English it gives something like "An existing connection had to be closed by the remote host").

Does anyone have a solution ??

Thank you for reading :3

 

https://forums.wynncraft.com/threads/help-us-diagnose-network-problems.268826/#post-3240588