Did you copy/paste the command for installing PHP directly? php8.1-xml is part of that command, but on the second line. I wonder if only the first line of the command was run.
Okay, that worked, I think… however I can’t get to the site with the domain name (only the IP address, which takes me to the /installer screen, and that’s farther along than I’ve been able to get to date, so thanks!).
I’ve had an A record for the the IP address in place for over a week and it shows as propagated. I had it behind a Cloudflare tunnel and thought that might be an issue, so that’s been turned off.
When I run host domain name in the terminal, it returns the correct IP address.
I’m furiously Googling possible issues at the same time I gratefully await any ideas you might have, gem. Thanks again.