Hi guys, this is a basic error message that occurs when your game loses its connection with the World of Warcraft servers, usually while logging in.
I just want to clear up some confusion for Bachanalla, it wants to “move” your character as in physically move their location in the game, not Transfer it between realms. This self-service option can usually fix this kind of disconnect.
Should that not help then you want to run through the troubleshooting steps here.