Database backup does not contain .sql

Hello.

I started creating a website with WordPress on October 31st,
and I have enabled BackWPup for backup.

I have several other sites, and the backups are working fine.

However, for the new site I started creating a few days ago,
the logs show that it finished successfully from October 31st to today,
but there is no .sql in either the folder that backs up the database backup and the list of installed plugins, or in Dropbox.

When I downloaded the backup and checked the contents,
it only contained backwpup_readme.txt, manifest.json, and pluginlist.2024-??-??.txt, which also contains a list of other plugins.

The processing time for the folder is 0 seconds each time.

When I checked the contents of the Dropbox backup,
I found that it contained .sql without the database name.

For other sites, the backup contained .sql with the database name.

The settings are exactly the same as other sites, and the site themes and WordPress versions are all up to date.

How can I back it up properly?