Hmm, odd. Getting a lot of python errors after upgrading. HA Core in Docker on Ubuntu host system. Python 3.8.7 is installed.
Stuff like this.
/usr/local/lib/python3.8/site-packages/botocore/awsrequest.py:624: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working
/usr/local/lib/python3.8/site-packages/dsmr_parser/clients/serial_.py:72: DeprecationWarning: "@coroutine" decorator is deprecated since Python 3.8, use "async def" instead
def read(self, queue):