Error doing job: Task exception was never retrieved - http_websocket.py

I did query this forum for my issue but none seems to be related to http_websocket.py. I am getting a dozen of these errors per day and not sure how to prevent it.

I am running HA (2024.2.5) inside Docker (network=host) on a Synology NAS. I only have one external application (MSR Reactor) connecting to HA via websocket. That application is working fine and no errors in the log. Just these errors in HA.

I do have the websocket_api in my HA configuration file.

Any suggestion is welcome. Thanks in advance.

Here’s the log

Logger: homeassistant
Source: /usr/src/homeassistant/homeassistant/runner.py:145 
First occurred: March 5, 2024, 00:19:40 (20 occurrences) 
Last logged: 12:28:31

Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/aiohttp/http_websocket.py", line 715, in ping
    await self._send_frame(message, WSMsgType.PING)
  File "/usr/local/lib/python3.12/site-packages/aiohttp/http_websocket.py", line 682, in _send_frame
    self._write(header + message)
  File "/usr/local/lib/python3.12/site-packages/aiohttp/http_websocket.py", line 702, in _write
    raise ConnectionResetError("Cannot write to closing transport")
ConnectionResetError: Cannot write to closing transport
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