The “some files could not be restored” error message might be a result of the “Extraction of userdata/fstab failed” message. Why it’s reporting a failure to restore userdata/fstab, seems to be the issue.
I do a daily backup and keep the last 3 days’ worth of Kodi backups. Looking at my system, the userdata/fstab file’s timestamp is from the time of the backup. Your timestamp is:
-rw-r--r-- 1 osmc osmc 159 Okt 24 21:03 fstab
so did you restore from a 24 Oct backup? If so, then the error message is probably a false alarm.