I got the message that MQTT could not startup. And my MQTT messages from Homey didn’t come in anymore. I tried to restart HA serveral times but still no succes. I only performed the upgrade and nothing more. This is what the log shows:
Setup failed for mqtt: Integration failed to initialize.
19:47 setup.py (ERROR)
Unable to start embedded MQTT broker
19:47 components/mqtt/init.py (ERROR)
Error initializing MQTT server
19:47 components/mqtt/server.py (ERROR)
Broker startup failed: [Errno 98] error while attempting to bind on address (‘0.0.0.0’, 1883): address in use
19:47 components/mqtt/server.py (ERROR)