Kaltura_Client_Exception thrown

Invalid KS "Yjk0YjVlNzc4NjRmMWRiMDJmZjM5YmQ4MDllYTlhYTdiYTQ3MzBmNXwxMDE7OzE0NzUxNDUwMTg7MjsxNDc1MDU4NjE4LjAxNztBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"