When running upgrade-nonroot it’s slow and never - at least not in a few hours - goes further than the following lines (though the exact details might have changed):
Unpacking linux-headers-5.10.0-9-amd64 (5.10.70-1) over (5.10.70-1) …
(Workstation)
Unpacking linux-headers-5.10.0-8-common (5.10.46-5) over (5.10.46-4) …
(Gateway)
After aborting this i have been prompted to run ‘sudo dpkg --configure -a’ and did that and restarted a few times and so on but it didn’t help.