HA: Entity is using native unit of measurement 'None' which is not a valid unit for the device class

[Commifreak]

Hey!

Just wanted you to know that the unit of Vaillant bai->ionisationvoltagelevel should be adjusted?

With latest versions I get:

Entity sensor.ebusd_bai_ionisationvoltagelevel (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'None' which is not a valid unit for the device class ('voltage') it is using; expected one of ['V', 'µV', 'mV'];

The default unit comes the the ebusd mqtt-hass config, right?