a bit of a Noob. After upgrading from 0.84 to 0.98 HA will not start. I can access via Putty but no UI . I have some error in the log:
2018-11-27 18:55:02 WARNING (Recorder) [homeassistant.components.recorder.migration] Database requires upgrade. Schema version: None
2018-11-27 18:58:11 ERROR (MainThread) [homeassistant.components.device_tracker] Unable to load /home/homeassistant/.homeassistant/known_devices.yaml: Config file not found: /home/homeassistant/.homeassistant/known_devices.yaml
Any help is greatly appreciated!