Seems this old error is back. Getting this constantly now, relogged etc - nothing has fixed it so far.
We have a thread about the Twitter integration issues here.
https://us.forums.blizzard.com/en/wow/t/twitter-integration/688564/5
Let’s move the discussion over there so we can keep these reports centralized to the main thread. Thank you for the report! Going to go ahead and close this thread here.