hm2mqtt Addon not starting after updating to 1.5.3

[hpwarter]

After installing some home assistant updates yesterday (hm2mqtt 1.5.2 -> 1.5.3, but also HA core 2025.12.x -> 2026.1.1), hm2mqtt Addon is not starting anymore

protocol is complaining about mqtt not available, all other mqqt devices are still working
mqqt_uri parameter is not set in config

anyone else having same problem or any ideas ?

[tomquist]

See #151 (comment)

Try restarting the MQTT Broker Addon