I probably would have learned more if I knew how everything got fixed ...
Yesterday I accidentally put this site in maintenance mode to install updates - but I was logged on as hazel instead of as user1. Big mistake! I couldn't get to the site to install the updates. When I tried to log in as UID 1, I got a 500 error. Oops ...
Robert used the situation as a learning experience - one of the configuration files wasn't set up right. After he fixed that, I could log on as user 1 to run the updates. I finally found out where to put it back online - go to Configuration>Development>Maintenance Mode. Seems easy enough and a I probably will remember it.
The most important thing is that the updates seem to have fixed the problem I was having with the Terms field on my blog post nodes. If only I knew what caused the problem and what caused it to go away ...
One of the problems here is that I really don't want to know! I have little interest in the back end of Drupal. It's a good thing that part of running a site keeps Robert engaged and learning, because I don't know how I would be doing this without him. And I really don't want to know that!