It is the same issue as in the thread linked below.
Sometimes a record label replaces an album on Qobuz with a new hi-res or remastered version. It is added to Qobuz as a new album, and the old version is deleted. However, Roon doesn’t know how to update its link, and it still has a pointer to the original album you favorited which no longer exists. To fix it, open the VERSIONS tab, and you should see both the new and old versions. Add the new version to your Roon library, and remove the old version from your library.
Please vote for this feature suggestion to fix the problem:
https://community.roonlabs.com/t/automate-qobuz-library-album-replacement/295677