This issue does not longer exist in appstream since jammy - so the quickest fix is to simply upgrade to that release.
** Also affects: appstream (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: appstream (Ubuntu) Status: New => Fix Released -- 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/1982198 Title: apt update: Can not add an empty (zero-length) key to the cache To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/1982198/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs