@Akino
Our FAQ below has some steps you can try if you've gotten stuck somewhere in game on your character.
How can I get out of this instance that I am stuck inside?
This is a porting issue that has existed for a long time. Normally happens when the zone you're trying to travel to is particularly busy. I get it with Rawl'kha once or twice a week, either when exiting the outlaw's refuge or when attempting to travel directly via wayshrine.
The usual error when it kicks back to the login screen is that the server is unavailable, and we should check our connection. This should probably be changed to a more accurate message such as "Server failed to respond in time, please reconnect." Logging back in takes us to where we were before attempting to travel.
Usually waiting a few minutes before attempting to travel to the intended location is the solution. Once a few players have left the target zone, porting to there is no problem.
Thought it'd be helpful if I add these additional details for you @ZOS_Bill