string(6) "error:" object(stdClass)#420 (3) { ["metadata"]=> array(4) { ["date"]=> array(1) { [0]=> string(29) "Wed, 12 Aug 2020 21:55:41 GMT" } ["server"]=> array(1) { [0]=> string(11) "istio-envoy" } ["x-envoy-upstream-service-time"]=> array(1) { [0]=> string(1) "2" } ["x-envoy-decorator-operation"]=> array(1) { [0]=> string(43) "grpc-proxy.default.svc.cluster.local:9200/*" } } ["code"]=> int(14) ["details"]=> string(19) "no healthy upstream" }