@kysdaddy Welcome to the Rockstor community.
Well that’s weird as you appear to be missing a package. All my systems here have it. Very starnge. Way back this was an issue upstream where yum-changelog has a missing dependency on python-dateutil ie:
https://bugzilla.redhat.com/show_bug.cgi?id=674468
ie my systems respond thus:
yum list installed | grep dateutil
python-dateutil.noarch 1.5-7.el7 @base
Try the following command as root:
yum install python-dateutil
There after you should be able to get updates. Was this a really old Rockstor install that you have kept updating? Bit strange that package is not installed.
Thanks for the report and let us know how you get on.