과제 제출이 안되네요

BackendClientError: Request to the API endpoint has failed.

  Check your network connection and/or the server status.

  *** Traceback ***

  File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\cli\run.py", line 118, in run

      resources=resources)

    File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\base.py", line 21, in _method

      return cls.session.worker_thread.execute(coro)

    File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\session.py", line 52, in execute

      raise result

    File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\session.py", line 36, in run

      result = loop.run_until_complete(coro)

    File "c:\programdata\miniconda3\lib\asyncio\base_events.py", line 579, in run_until_complete

      return future.result()

    File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\kernel.py", line 62, in get_or_create

      async with rqst.fetch() as resp:

    File "c:\programdata\miniconda3\lib\site-packages\ai\backend\client\request.py", line 78, in __aenter__

      raise BackendClientError(msg) from e

이렇게 뜨면서 제출이 안되네요..