core: EDL21 AttributeError: 'NoneType' object has no attribute 'call_soon'

The problem

Hello,

First of all, the integration works without problems and I can see my power consumption. This is updated about every minute. At some point, however, this is no longer updated and about a minute after the last update I get the following error in the log (see below). When I restart the system, it initially works normally again, until at some point the error reappears irregularly.

What version of Home Assistant Core has the issue?

2022.12.6

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Supervised

Integration causing the issue

EDL21

Link to integration documentation on our website

https://www.home-assistant.io/integrations/edl21/

Diagnostics information

No response

Example YAML snippet

sensor:
  - platform: edl21
    serial_port: /dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0046-if00-port0

Anything in the logs that might be useful for us?

Logger: homeassistant
Source: /usr/src/homeassistant/homeassistant/runner.py:97
First occurred: 06:22:14 (1 occurrences)
Last logged: 06:22:14
Error doing job: Task exception was never retrieved

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/sml/asyncio.py", line 109, in _reconnect
    await self._disconnect()
  File "/usr/local/lib/python3.10/site-packages/sml/asyncio.py", line 140, in _disconnect
    self._transport.abort()
  File "/usr/local/lib/python3.10/site-packages/serial_asyncio/__init__.py", line 192, in abort
    self._abort(None)
  File "/usr/local/lib/python3.10/site-packages/serial_asyncio/__init__.py", line 396, in _abort
    self._loop.call_soon(self._call_connection_lost, exc)
AttributeError: 'NoneType' object has no attribute 'call_soon'

Additional information

No response