How do I update the database?
Very interesting. The file contained access information for a database at a web host that I changed from many years ago. Somehow, that database must have been accessible even after I terminated the account, and the file containing the access info was moved to the new host. The old hosting service must have discovered this and disabled the database. I don't have a backup of the database. How do I set up a new one? Do I just delete the file: /admin_gallery/Connections/powergallery.php and let it create a new one or is there more to it? I guess I need to go through the setup wizard again and start from scratch. But how?