升级ha0.54 mqtt不见了

villen

升级了ha 到0.54  mqtt server 不见了。。。。何解？


错误代码：
could not be set up:
* light.mqtt
* [mqtt](https://home-assistant.io/components/mqtt/)
* binary_sensor.mqtt
* sensor.mqtt
Please check your config, title=Invalid config, service_call_id=1973948464-7, service=create, domain=persistent_notification>
2017-10-03 22:35:41 INFO (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: service_data=notification_id=invalid_config, message=The following components and platforms could not be set up:
* light.mqtt
* [mqtt](https://home-assistant.io/components/mqtt/)
* binary_sensor.mqtt
* sensor.mqtt