Unable to start "MQTT Server & Web client" add-on

Hello,

I have a problem withe the community add-on “MQTT Server & Web client”. When I install a fresh version of Hass.io and directly install this add-on without doing anything with the add-on configuration or else there is failure in the log and then it automatically stops itself after manually starting the add-on.

I have this problem too - newbee, totally… Is it designed to run besides mousquitto?