core: 0.113.0 - WebSockerResponse error

The problem

From time to time I see this error log; it’s not related to 0,.113.x, but in this version shows up more often. Unfortunately no info from which components may cause the issue

Environment

• Home Assistant Core release with the issue: 0.113.0
• Last working Home Assistant Core release (if known): < 0.110.x IIRC
• Operating environment (OS/Container/Supervised/Core): Core
• Integration causing this issue:
• Link to integration documentation on our website:

Problem-relevant configuration.yaml

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Traceback/Error logs

2020-07-29 00:57:46 ERROR (MainThread) [homeassistant] Error doing job: Exception in callback WebSocketResponse._send_heartbeat()
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/asyncio/events.py", line 81, in _run
    self._context.run(self._callback, *self._args)
  File "/usr/local/lib/python3.8/site-packages/aiohttp/web_ws.py", line 102, in _send_heartbeat
    self._loop.create_task(self._writer.ping())  # type: ignore
AttributeError: 'NoneType' object has no attribute 'ping'

Additional information