Error messages after start, reason unknown, system was running for month with no changes no issues

[rossko57]

@T-A

So as first step I will upgrade to 2.5.12

Good move, but maybe not quite as simple as that because of the external repository change to fetch the update from,
Start here-

openHAB 2.5.x and the sunset of Bintray

All, The sunset of Bintray on May 1st caused existing openHAB 2.5.x installations to no longer be able to download add-ons from the remote repository (because this was actually Bintray). The original plan was to move this content to another place and offer a seamless switch for the users, but unfortunately this turned out to be more complicated than thought, so that it didn’t work out - at least until now. There are two options to fix the problem, though: Use the offline version of the add-…