@Carl-Philipp Welcome to the Rockstor community forum.
I’m not entirely sure what’s going on here but there are some pending updates for you to be running the latest version. 4.5.0-0 was our first testing channel release for the current testing phase. Take a look at this forum post for more context on this:
We are now on Stable Release Candidate 3 (RC3) which is 4.5.6-0 from that same thread.
Also note that your base OS is now EOL at Leap 15.3, and although we are still, just about, managing to release for this OS version; our current target is now Leap 15.4.
Depending on the complexity of your setup, you may want to take the re-install route using our latest pre-build installers downloadable here:
And use a Leap 15.4 based one, the 15.3 based ones are included currently as a convince for those still having some issues with 15.4 hardware compatibility. The installers currently include the RC3 4.5.6-0 as of this forum post, as we are on the home run to releasing our next stable channel release. See the following GitHub Milestone for progress on that front:
You existing pools (except for the system pool as it will be overwritten) can be inported into the newer install if required. Just be very careful not to accidentally install over one of your existing pool members.
Alternatively you can zypper dup in place if you are familiar with that process, but that can be more complicated and we have yet to create a 15.3 to 15.4 counterpart to our:
https://rockstor.com/docs/howtos/15-2_to_15-3.html
Let us know where you are with this current setup regarding data/configuration etc so folks here on the forum can help with getting you onto updated. As you will then likely have less issues than with this earliest of testing releases. Plus we have made major build changes in the interim that are the future of how we are to be building and updating our main package from now on.
Hope that helps.