Trial of the Sekhemas instance crash

I did 3 floors of trials of Sekhema, went to te 4th one - trial of time.
"Disconnected: The terrain generator for the client is out of sync with the server. Please create a new instance and try again."
When I rejoin trial of sekhema I see there is ongoing run and there is always the same error when i try to enter the area.

I just had the same thing happen.