Need help with understanding Error

Hello,

I’be been getting this error the past few days. COuld someone please help me understand what it points to so I can have a starting point or and idea how to fix it?

Logger: aiohttp.server
Source: /usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py:405
First occurred: 10:07:53 (1 occurrences)
Last logged: 10:07:53

Unhandled exception
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1192, in _sendfile_fallback
    read = await self.run_in_executor(None, file.readinto, view)
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 514, in start
    resp, reset = await task
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 460, in _handle_request
    reset = await self.finish_response(request, resp, start_time)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 613, in finish_response
    await prepare_meth(request)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_fileresponse.py", line 286, in prepare
    return await self._sendfile(request, fobj, offset, count)
  File "/usr/local/lib/python3.9/site-packages/aiohttp/web_fileresponse.py", line 99, in _sendfile
    await loop.sendfile(transport, fobj, offset, count)
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1171, in sendfile
    return await self._sendfile_fallback(transport, file,
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1201, in _sendfile_fallback
    await proto.restore()
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 268, in restore
    self._transport.resume_reading()
  File "/usr/local/lib/python3.9/asyncio/sslproto.py", line 343, in resume_reading
    self._ssl_protocol._transport.resume_reading()
AttributeError: 'NoneType' object has no attribute 'resume_reading
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