code: def send(self, url, **kwargs):
          
          if self.config.server_url:
              return super(DjangoClient, self).send(url, **kwargs)
          else:
              self.error_logger.error("No server configured, and elasticapm not installed. Cannot send message")
              return None
docs: Serializes and signs ``data`` and passes the payload off to ``send_remote``
  
          If ``server`` was passed into the constructor, this will serialize the data and pipe it to
          the server using ``send_remote()``.