So the Rockstor package was successfully upgraded but it looks like the remainder of the systems upgrades (the CentOS base) failed or was interrupted. It may be that you rebooted whist the upgrade, which can take quite some time, was in process. In which case this is in part a failure on our part potentially as we have no means of indicating on the Web-UI that an update is still in progress. The relevant issue opened by @doenietzomoeilijk is:
which grew from the already sighted thread:
And the main hint to resolving this is given in the following text:
So I’d first say you should try to repair this machine with the following command:
yum-complete-transaction
and paste the output in this thread so that others can chip in with further suggestions given it’s outcome.
Hope that helps and let see where that gets us in this machine first. We can look to the other machine, which mostly likely has the same issue, once this machine is sorted upstream updates wise.