same problem here, first got the error going to Mount Maelstrom, after a retry I was able to get there.
after that I tried to go to Wayfarer Foothills and got the error again, so far no luck in retrying
edit: after a while I was able to play again, even could go to Wayfarer without trouble.
I didn’t try Mount Maelstrom again, so no idea if that would work