Comment # 2 on bug 1223095 from John Carrick Smith

I had this problem too but only on one of my computers that runs openSUSE Leap
15.5. I found that the problem occurred on a repository where the URL of the
repository started with 'cdn:'. The list of repositories shown in Yast had both
those where the URL started 'http:' as well as those starting 'cdn:'. The
computers without the problem did not have the URL starting 'cdn:'. Running
'zypper rs openSUSE' solved the problem in my case so the problem appears to be
in the openSUSE software management service.