I have a problem updating packages on my OMV5 installation on a raspberry pi 4. The Update Manager in the GUI shows no packages to be updated. However, sudo apt update tells me that there are many packages to be updated, but also apt_pkg.Error: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.. I've tried omv-aptclean, but that did not solve the issue. I don't know where to start looking for a solution, so I need some help please.
Everything else seems to be running without problems. I can access files through the command line. I am running nextcloud with letsencrypt (using the linuxserver.io docker images), and that works without problems as well.