F-Droid build failed

[linsui]

What

/home/vagrant/build/openfoodfacts.github.scrachx.openfood/packages/smooth_app/android/app/src/main/res/xml/backup_scheme.xml:14: Error: Subdirectories are not allowed for domain database [FullBackupContent]
                path="app_flutter/smoothie.db" />
                      ~~~~~~~~~~~~~~~~~~~~~~~
   Explanation for issues of type "FullBackupContent":
   Ensures that <data-extraction-rules> and <full-backup-content> files, which
   configure backup options, are valid.
   https://android-developers.googleblog.com/2015/07/auto-backup-for-apps-made-simple.html
1 errors, 0 warnings
FAILURE: Build failed with an exception.

https://gitlab.com/fdroid/fdroiddata/-/jobs/6303312077

Could you please take a look? Thanks!