Kaltura_Client_Exception thrown

Invalid KS "OTJjOWJlNDJjZTdlYTQ0ZmJlZTZhNTdlM2QxZmEyZTUyNDg0ZGFlOXwxMDE7OzE0NzIzNDE1NTc7MjsxNDcyMjU1MTU3LjQyMTE7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"