Created attachment 874393 [details]
YaST log files

I attempted to do the offline/DVD upgrade of an existing Leap 15.4 system to
15.5. I downloaded the DVD image and verified the SHA signature before burning
the image.

On booting the DVD image and selecting "Upgrade" from the initial menu, I was
eventually given the attached pop-up window before the "welcome" stage of
upgrade. The text in that window says:

  YaST2
  Calling the YaST module `inst_repositories_initialization has failed.
  More information can be found near the end of the /var/log/YasT2/y2log' file.

  This is worth reporting a bug at http://bugzilla.suse.com/:
  Please, attach also all YaST logs stored in the /var/log/YaST2/' directory.
  See http://en.opensuse.org/Bugs/YaST for more information about YasT logs.

I was able to tar up the /var/log/YaST2 directory; the contents are attached.