I can confirm, that the debuginfo repositories are not in MirrorManager's database for the primary architectures. Not sure what the problem is, but I am working on fixing it.

This now fixed. Not only the debug repository was missing, but also the source repository. There is chance that the reason for this error was the move from development to release. The repository information in the database was missing a directory_id and that is usually changed during move-from-devel-to-release.

I deleted the repositories from the database and re-run update-master-directory-list. Repositories have been re-created with the correct information.