It appears that HA units are case sensitive: https://developers.home-assistant.io/docs/core/entity/sensor/, so for SensorDeviceClass.REACTIVE_POWER it should be "var", not "VAr". Also for SensorDeviceClass.TEMPERATURE, the degree symbol is required: "°C".
Entity sensor.ams_ed6e_qo (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'VAr' which is not a valid unit for the device class ('reactive_power') it is using; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22
Entity sensor.ams_ed6e_q (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'VAr' which is not a valid unit for the device class ('reactive_power') it is using; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22
Entity sensor.ams_ed6e_tqo (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'kVArh' which is not a valid unit for the device class ('energy') it is using; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22
Entity sensor.ams_ed6e_tqi (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'kVArh' which is not a valid unit for the device class ('energy') it is using; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22
