Partial files backup stuck in twilight zone

One of the clients is configured to have only image backups. However, before this configuration was set, it managed to start a files backup, which occupies 3.3GB on disk. This files backup was never completed, so it’s not visible on the web interface, not as complete and not as partial.

I ran urbackupsrv remove-unknown and urbackupsrv repair-database but the directory is still there.

Any way to address this besides deleting the directory manually?

# ls -al
total 44
drwxr-x--- 11 urbackup urbackup 4096 Aug  1 10:21 .
drwxr-xr-x 10 urbackup urbackup 4096 Aug  5 02:10 ..
drwxr-x---  4 urbackup urbackup 4096 Jul 27 12:13 180727-1152
drwxr-x---  2 urbackup urbackup 4096 Jul 27 19:59 180727-1744_Image_C
drwxr-x---  2 urbackup urbackup 4096 Jul 27 17:44 180727-1744_Image_SYSVOL
drwxr-x---  2 urbackup urbackup 4096 Jul 28 19:31 180728-1930_Image_SYSVOL
drwxr-x---  2 urbackup urbackup 4096 Jul 29 12:43 180728-1931_Image_C
drwxr-x---  2 urbackup urbackup 4096 Jul 31 13:18 180729-2039_Image_C
drwxr-x---  2 urbackup urbackup 4096 Jul 29 20:39 180729-2039_Image_SYSVOL
drwxr-x---  2 urbackup urbackup 4096 Aug  2 09:45 180801-1021_Image_C
drwxr-x---  2 urbackup urbackup 4096 Aug  1 10:21 180801-1021_Image_SYSVOL

# du -sh 180727-1152
3.3G    180727-1152