New information: While waiting for guidance, I moved all the tables in the second DB file into a new DB with all the tables, and it published and ran successfully.
The new URL is https://019d979f-1bab-3f64-ab89-1f0855e70ca3.share.connect.posit.cloud
The original app is called 'eeostat census' and the new one-DB on is 'One_DB.'