def METHOD_NAME(self, dumps_root):
    """
    Returns the latest backup file available in the dumps_root directory
    """
    use_backup = None
    # Ultimately, we are okay about a backup from a minor release
    fallback_version = ".".join(map(str, kolibri.VERSION[:2]))
    if os.path.exists(dumps_root):
        use_backup = search_latest(dumps_root, fallback_version)
    if not use_backup:
        raise CommandError(
            "Could not find a database backup for version: {}".format(
                fallback_version
            )
        )
    return use_backup