Hello Arne,
thank you for your reply. After many hours of trying and reading logs I’ve got it working again! The root cause for this problem seems to be:
2025-01-26 19:21:36.611 [INFO ] [af.deployer.kar.KarArtifactInstaller] - Found a .kar file to deploy.
2025-01-26 19:21:36.613 [INFO ] [af.deployer.kar.KarArtifactInstaller] - KAR oh-ibapl-kar-4.1.0.3-20240108.093534-9.kar is already installed. Please uninstall it first.
This lead me at the end to IKEA Tradfri VINDSTYRKA no PM2.5 channel [zigbee] - #11 by chris. Somehow the handling of kar files is broken. I’ve renamed the kar to zip and extracted all single jar files and copied them to the addons folder and tada: after a reboot of openHAB the binding was up and running and didn’t stop after one minute runtime.
Best Regards,
Pit