This is happening to me right now, happened in Ardenweald when I was levelling my alt and then in the Eye of the Storm in BG when I was so close to killing that annoying disc priest.
Yep having same problem for 2 days now. Server EU-Sylvanas
I had the same problem, was stuck in Bastion, when I tried to login I got the error message above after being logged in for 0,5 seconds.
I Managed to solve the problem by using the stuck character service (https://battle.net/support/help/wf/wow/197/834)
Hope this helps anyone having the same problem.
Mine Hunter too, i fell from an edge and before i die i get this error.
Tried to kill the gorm rare in Ardenweald (the one you ride on) Got thrown off and falling through the ground. I disconnect instantly and get the error 51900319.
I now can’t log on 