This error message is shown not to alert users, but rather make users report these issues to the distributor, as this particular issue means the distributor has a mistake in their metadata somewhere. In this case it's not Ubuntu's fault directly, but rather GNOME Software injecting invalid metadata. This is fixed upstream with commit https://gitlab.gnome.org/GNOME/gnome-software/commit/7c1620990b6361fac370b76c9828f8f77ff77a72 which should land in the next Ubuntu release naturally (but may be cherry-picked to make this issue go away even sooner).
** Changed in: appstream (Ubuntu) Status: Confirmed => Invalid ** Also affects: gnome-software (Ubuntu) Importance: Undecided Status: New ** Changed in: gnome-software (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to appstream in Ubuntu. https://bugs.launchpad.net/bugs/1861631 Title: "The AppStream system cache was updated, but some components were ignored. Refer to the verbose log for more information." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1861631/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs