[Bug] Deleting file backups throws errors, but deletes anyways?

I’m on 2.2.8 server. The OS is Ubuntu with ext4 as the FS that UrBackup is running on. The actual backup content is working against an SMB share that is mounted to a folder, and the permissions are setup so the urbackup user has rwx for the folders and files, so it can make/edit/delete stuff as it sees fit.

Now, when I tell UrBackup through the webGUI to delete an image, it does it fine. But when I tell it to “delete now” a file backup, the gui pops up saying there’s an error, check the logs. And I see weird stuff in the logs:

2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/.hashes/C/Windows/System32”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/.hashes/C/Windows”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/.hashes/C”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/.hashes”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/C/Windows/System32”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/C/Windows”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653/C”
2018-03-20 12:29:45: ERROR: Error deleting directory “/media/UrBackup/WIN-NHH2LOOD3TL/180319-1653”

Most of the time the files on-disk get deleted anyways, on rare occasion they don’t. But the thing is, I don’t see why the errors are being thrown. First, it says error… but doesn’t say anything like “permission denied”. Just that an error happened, not what the error is. And even still, when I go check, the relevant backup folder ends up getting deleted, so it seems throwing an error is… erroneous, hah!

I think automatic deletion of file backups are also generating the same errors too.

Either way, seems like a bug?