Comment 13 for bug 1924850

I'm so confused. My 21.04 installation aborted over this, and I was warned my system may be in an unuseable state, except when I login via ssh it says it is 21.04 and apt doesn't seem to detect anything to update...so...how do I know if there is any work unfinished, and how can I check my system has updated properly, or if there are outstanding upgrade tasks to be performed?

I was going to attached my var/log/installer - except I saw every file is empty / zero bytes, so it's pointless!? Am using a CloudVPS via Onapp via Neostrada.

After the errors, I moved sbin/grub-install to opt/mytemp/grub-install and then ran
/usr/lib/usrmerge/convert-usrmerge
which gave the same complaint again this time about update-grub
so I moved sbin/update-grub to opt/mytemp/update-grub and then ran
/usr/lib/usrmerge/convert-usrmerge
again - and this time it gave no further errors.
Instead saying:
The system has been successfully converted
So then I tried:
dpkg --configure -a
which said:
Setting up usrmerge (24ubuntu3) ...
and then went quiet, returning me to the prompt.
I tried it again:
dpkg --configure -a
and got nothing on screen, just a new command prompt line - I assume it ran successfully or something.

So was this just a bumpy upgrade and all is good,
or is something now wrong with my system, and I need to do something to finish the installation process?