Tried to understand the Thing db.
From the errors it is often Expected BEGIN_ARRAY but was BEGIN_OBJECT at path $.channels
What I find is that the HUE things now contain channel definitions which are not formatted as array of objects but directly as object. Ok, they seem to be single objects so actually not really an array but does the jsondb implementation still expect an array?
All affected things (with channels) are HUE items if that helps anything.
Opened an issue on github.
Also downgraded to snaphost 1566 which seems to give me pretty much my system back from a first look. (That means snapshot 1568 already shows the issue for me; not only 1569)
Update to 1569 broke all Zwave things => they are gone. Re add stick and notes: Zwave fine. Edit one of that things: error 409 conflict (think with same thing from version 1562 not deleted and not shown anymore)
Will go back to 1562, because 1566 kills zwave (unititialised) too