this is usually caused by the dnf updates manager which is unable to find an upgrade solution with x86_64 packages and also because I think dnf has some issues with bi-arch support since Fedora abandoned the x86 target.
If you can post the full output of the command sudo dnf update I think we may find and indication of the root cause of the problem and fix it.
Another viable solution is disabling the x86 repositories by setting enabled = 0 in the file /etc/yum/repos.d/openmamba-rolling-i586.repo. Currently x86 repository is needed on x86_64 only if you use Wine for x86 or have other special needs and I might decide to disable it by default in future.
This reply was modified 2 years, 2 months ago by Silvan.
I think this was a transient problem while releasing the up-to-date KDE frameworks packages. It should work now after refreshing the packages list with sudo dnf refresh or using the mambatray icon entry.
Thanks for reporting.