Where are & how open mqtt broker logs?

I don’t get it. I need to see the mqtt broker logs but I don’t find them in Home Assistant OS. I added through Studio Code Server Add-on in configuration.yaml

logger:
  default: error
  logs:
    homeassistant.components.mqtt: debug

But still I don’t find them.
Or is there an add-on that does this?

If you installed the Mosquitto MQTT Broker Add-on, its log is displayed in the Log tab.

What you configured (shown in your first post) is for Home Assistant’s MQTT integration. It connects Home Assistant to the MQTT broker (and other things) but it’s not the broker. The Add-on I mentioned is the broker.

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Thank you. Stupid me did not install mqtt addon.

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