Kaltura_Client_Exception thrown

Invalid KS "ZjNkOWRjODExOTUwMjYzZTNmMWE0MzgyMGIwOGYzNzI2ZGEzZGRiYnwxMDE7OzE0NzUwOTAwMDM7MjsxNDc1MDAzNjAzLjcxNDtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"