Kaltura_Client_Exception thrown

Invalid KS "ODZkY2NmYzExMTkwMTljYTUxYWRjZTNkZjIwYmNjMmY4MTllMGIxOXwxMDE7OzE0NzUxNTIyMjk7MjsxNDc1MDY1ODI5LjAyMjc7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"