How to use the elasticsearch5.exceptions.ConnectionError function in elasticsearch5

match_query.extend(_construct_phonetic_match_query(e, weight))
        text_relevance_query["query"]["function_score"]["query"]["bool"][
            "should"
        ].append({"bool": {"should": match_query}})

        whitelist_query = _construct_whitelist_query(
            top_entity, use_phons=self._use_double_metaphone
        )
        text_relevance_query["query"]["function_score"]["query"]["bool"][
            "should"
        ].append(whitelist_query)

        try:
            index = get_scoped_index_name(self._app_namespace, self._es_index_name)
            response = self._es_client.search(index=index, body=text_relevance_query)
        except EsConnectionError as ex:
            logger.error(
                "Unable to connect to Elasticsearch: %s details: %s", ex.error, ex.info
            )
            raise EntityResolverConnectionError(es_host=self._es_client.transport.hosts)
        except TransportError as ex:
            logger.error(
                "Unexpected error occurred when sending requests to Elasticsearch: %s "
                "Status code: %s details: %s",
                ex.error,
                ex.status_code,
                ex.info,
            )
            raise EntityResolverError(
                "Unexpected error occurred when sending requests to "
                "Elasticsearch: {} Status code: {} details: "
                "{}".format(ex.error, ex.status_code, ex.info)