Kaltura_Client_Exception thrown

Invalid KS "ZjVlZmQ2NmJiMjY3MzRkNGFmNjcwOTViYjFiNmZmNDUzNGNhYmNmZHwxMDE7OzE0NzUwOTYzMzQ7MjsxNDc1MDA5OTM0LjQzNztBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"