HA wont start after upgrade tp 0.98

#1

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!

#2

That is a really big jump in versions. There have been a bunch of breaking changes in between those two.

My recommendation is to revert back to your previous version. Then take each new version one at a time and go thru all of the breaking changes for each and get that version working. Then move to the next one.

Or if you don’t have a very big system it might just be easier to start from scratch and add everything back in using the newest docs to make sure it works.

#3

You should be able to delete the homeassistant.db. But you will lose your history and I believe logs. Then restart.

#4

That might fix the “warning” but that isn’t what is causing HA to not start. Warnings don’t prevent starting up.

The “error” is with the “known_devices.yaml” file.

Even if they fix that problem too then unless they have a really simple configuration.yaml then they are likely to have other issues as well.

It may be worth a shot but they should be aware that it may not fix everything…