The VM is indeed the same VM from a year or so ago. I’ve maintained it by upgrading Ubuntu, PHP, Postgres, etc but it’s still at its core the original machine.
The first time the issue occurred, I did reboot, and got the same command. I then restored my snapshot, enabled Maintenance mode, and ran through it again which failed, which is when I then tried installing components manually.
It’s not been rebooted since then, so I’ll check and see if there is any data in the mentioned logfile.
I may have manually installed smbclient before to deliver a fix for an issue, I don’t recall.
I’ll be happy to open a GitHub issue shortly.