21:12:32:WU00:FS00:Connecting to assign-GPU.stanford.edu:80
21:12:44:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:80': 10001: Server responded: HTTP_INTERNAL_SERVER_ERROR
21:12:44:WU00:FS00:Connecting to assign-GPU.stanford.edu:8080
21:12:44:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:8080': 10001: Server responded: HTTP_INTERNAL_SERVER_ERROR
21:12:44:ERROR:WU00:FS00:Exception: Could not get an assignment
21:12:44:WU00:FS00:Connecting to assign-GPU.stanford.edu:80
21:12:45:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:80': 10001: Server responded: HTTP_INTERNAL_SERVER_ERROR
21:12:45:WU00:FS00:Connecting to assign-GPU.stanford.edu:8080
21:12:45:WARNING:WU00:FS00:Failed to get assignment from 'assign-GPU.stanford.edu:8080': 10001: Server responded: HTTP_INTERNAL_SERVER_ERROR
21:12:45:ERROR:WU00:FS00:Exception: Could not get an assignment
Since that was 3 hours ago and nobody else has responded, I'm going to assume it was a temporary error unless it's confirmed by others or one of my slots needs a new WU.
There have been some ongoing updates to FAH's servers. It may be that the server has moved to a new IP address. I recommend you reboot your system (which will clear any obsolete DNS entries an reset your network configuration. Does it still happen?
I saw the same message many times yesterday ... I have not seen it so far today ... problem was probably at server end but I have no 'inside' knowledge of what may have caused it.
I think it's safe to say that the problem was not at our end.