can't install cobbler-web-3.0+git20190212.963f85c8-5.3.noarch:
  package cobbler-web-3.0+git20190212.963f85c8-5.3.noarch requires cobbler, but none of the providers can be installed
  nothing provides grub2-arm64-efi needed by cobbler-3.0+git20190212.963f85c8-5.3.noarch
  nothing provides grub2-powerpc-ieee1275 needed by cobbler-3.0+git20190212.963f85c8-5.3.noarch
can't install cobbler-3.0+git20190212.963f85c8-5.3.noarch:
  nothing provides grub2-arm64-efi needed by cobbler-3.0+git20190212.963f85c8-5.3.noarch
  nothing provides grub2-powerpc-ieee1275 needed by cobbler-3.0+git20190212.963f85c8-5.3.noarch