Can't open dashboard after update to OpenHab 2.2

I’m using OpenHabian 1.4 on a Raspberry pi.
I now updated from 2.1 to 2.2.
There were no hints that something went wrong during the update. But now I can’t reach openhab via http://openhabianpi:8080
I checked via sudo systemctl status openhab2.service that openhab is running. It says that it is running since 30 minutes.
But my logfiles stopped at that time when i have done the update.
What can I do now?

Solved the problem with informations from this thread No Acess to Port 8080 after Update to Version 2.2