Kaltura_Client_Exception thrown

Invalid KS "OGUyZWJlYjIwZDUwM2MyM2Y5YjY0NzIwMTAxYzlkMjIyYTEzYzg5Y3wxMDE7OzE0OTgyMjA5NTM7MjsxNDk4MTM0NTUzLjMyOTtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"