Did you manage to resolve this? I have the same issue today and its bricked my server - what a massive PITA! All because of stupid licensing... How about have a weeks grace period or something to allow for errors like this, awful! How did you fix? How long do they take to respond? Incredibly frustrating.
Nothing changed, upgrade from 6.12.8 to .10 basically made my SMB shares no longer mountable and greyed out. This also breaks the auto mount. This then means docker/s started and can't see data and can cleanse plex DB etc. Not Good.
Anyone else seeing this?
Update: Fixed by manually re-adding shares via SMB - But still a 'bug' in the update process it seems lucky I noticed