I have a database activity that looks fine but entries cannot be added for some reason. The templates are all set up. When I try to Add Entry, nothing happens, no error, etc. There are only 4 fields (URL, text, upload file, text), all optional. It says there are no entries in the DB, exporting confirms this, but it also says that 37 people have completed the activity (completion requirement = 1 entry).
Ideas? Using Moodle 3.1. I have other DBs that work fine.