I discovered that I have dozens of tags in my database that I haven't created. Apparently, there were tags somewhere in some pics in an external library, but I no longer have those images. I went to
Admin | Create job | Tag cleanup
Admin | Create job | Tag cleanup
, hit confirm and got the message that the job had been created. 26 hours later, all the tags are still there. I have clicked on quite a number of the tags, at random, and no assets appear when I select a tag, so they should be getting deleted since they have no assets associated with them.
I submitted the most recent job shortly after 17:56 on 22 Sept with logging set to