Kaltura_Client_Exception thrown

Invalid KS "ZDQ2MzU1YWNlNDdkODVmZjM0N2FjNGMwMWEzYzEyYjI2ZmJkYjFiYnwxMDE7OzE0OTU3NjMyNjQ7MjsxNDk1Njc2ODY0LjAxMTtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"