(Marking this one SOLVED-seems to be a network/server issue, thanks)
LM 20.1 mintUpdate 5.7.3 failed to make an update this morning (sorry, I didn't note the error)
I acknowledged the error dialogue and then it told me that the system is up to date, which it wasn't because it couldn't obtain/open the packages properly
history.log says (my bold),
I reinstalled the packages in Synaptic, which hasn't prompted mintUpdate to changeStart-Date: 2021-02-16 04:42:16
Commandline: /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 88080392 -o Synaptic::closeZvt=true --set-selections-file /tmp/tmpo08r0cei
Requested-By: tim (1000)
Upgrade: gnupg-utils:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), friendly-recovery:amd64 (0.2.41, 0.2.41ubuntu0.20.04.1), gpg-wks-client:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gnupg-l10n:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpg-wks-server:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpg:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), dirmngr:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpgv:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gnupg:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpg-agent:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpgconf:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1), gpgsm:amd64 (2.2.19-3ubuntu2, 2.2.19-3ubuntu2.1)
Error: Sub-process /usr/bin/dpkg returned an error code (2)
End-Date: 2021-02-16 04:42:19
Thanks for any help