Some players can not connect to server with this error: https://gyazo.com/fe8a308670ffc16822c0af266a1e38dd

The only fix is to have them spam console with relationshipmanager.leavetem while loading.

Does anyone know what maybe causing this? (Clans plugin? )

Thanks in advance.

Since it's only happening to some players and based on that error I would assume it's an encoding issue where a player with an odd character in their name are added to a team but the team front-end is not capable of rendering that character.  Instead of gracefully failing, it crashes the client.

It _could_ be due a plugin adding the player to the team without properly santizing the name assuming some sort of sanitzation method exists.  If such a method doesn't exist then this would also be a problem for vanilla without plugins.