Migration from OH4.0.2 to 4.3 going wrong with openhabian

Hello,
as suggested from Rich I opened a new own discussion for my problem.

I upgraded today from OH 4.0.2 directly to 4.3 using the update mechanism from openhabian. Update run through without any problem, however the Webinterface on Port 8080 is not coming up. I checked in the logs and got the following error messages:

2024-12-18 10:17:36.155 [WARN ] [org.apache.felix.fileinstall        ] - /openhab/addons does not exist, please create it.
2024-12-18 10:17:36.254 [ERROR] [org.apache.felix.fileinstall        ] - Cannot create folder /openhab/userdata/tmp/bundles. Is the folder write-protected?
2024-12-18 10:17:36.261 [ERROR] [org.apache.felix.configadmin        ] - [org.osgi.service.cm.ManagedServiceFactory, id=48, bundle=18/mvn:org.apache.felix/org.apache.felix.fileinstall/3.7.4]: Unexpected problem updating configuration org.apache.felix.fileinstall.af6d4b0a-c87f-448f-9a15-52aa522243d1
java.lang.RuntimeException: Cannot create folder: /openhab/userdata/tmp/bundles
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.prepareDir(DirectoryWatcher.java:647) ~[?:?]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.prepareTempDir(DirectoryWatcher.java:627) ~[?:?]
        at org.apache.felix.fileinstall.internal.DirectoryWatcher.<init>(DirectoryWatcher.java:179) ~[?:?]
        at org.apache.felix.fileinstall.internal.FileInstall.updated(FileInstall.java:250) ~[?:?]
        at org.apache.felix.fileinstall.internal.FileInstall$ConfigAdminSupport$Tracker.updated(FileInstall.java:380) ~[?:?]
        at org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.updated(ManagedServiceFactoryTracker.java:159) ~[bundleFile:?]
        at org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.provideConfiguration(ManagedServiceFactoryTracker.java:93) [bundleFile:?]
        at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceFactoryUpdate.provide(ConfigurationManager.java:1266) [bundleFile:?]
        at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceFactoryUpdate.run(ConfigurationManager.java:1210) [bundleFile:?]
        at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:122) [bundleFile:?]
        at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:84) [bundleFile:?]
        at java.lang.Thread.run(Thread.java:833) [?:?]

Any suggestions?

Did you perform a clean cache and a fix permission command? A reboot of your Pi might also help.
Please post the results afterwards.