Kaltura_Client_Exception thrown

Invalid KS "ZWNkYjk0NzBkNTc2ZjIyYzRmZTUzNWNiMzIxMjg2NjEyMmY2M2MwNHwxMDE7OzE0NzU0NDE3MTQ7MjsxNDc1MzU1MzE0LjExNjtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"