core: 0.92.1 ConnectionResetError: Cannot write to closing transport

Home Assistant release with the issue: 0.92.1

Last working Home Assistant release (if known): 0.90.1

Operating environment (Hass.io/Docker/Windows/etc.): Hass.io

Component/platform: aiohttp

Description of problem: I get this error 4 or 5 times a day

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant): I haven’t localized it

Traceback (if applicable):

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_protocol.py", line 447, in start
    await resp.prepare(request)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_response.py", line 353, in prepare
    return await self._start(request)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_response.py", line 667, in _start
    return await super()._start(request)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_response.py", line 410, in _start
    await writer.write_headers(status_line, headers)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/http_writer.py", line 112, in write_headers
    self._write(buf)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/http_writer.py", line 67, in _write
    raise ConnectionResetError('Cannot write to closing transport')
ConnectionResetError: Cannot write to closing transport

Additional information: