Address Locator error on Online Geocode service

I am using my owned prepared locator Geocode service ( http://maps.dhalahore.org/ArcGIS/rest/services/DHAMAP/AddressLocator/GeocodeServer ) in Geocode online (arcgis-appstudio-samples-master).

Working perfect on Reverse Geocoding but giving Error ( Unable to complete operation. No Address Found ) when i search any address in search box.

import QtQuick 2.3
import QtQuick.Controls 1.2
import QtQuick.Dialogs 1.2
import QtPositioning 5.3

import ArcGIS.AppFramework 1.0
import ArcGIS.AppFramework.Controls 1.0
import ArcGIS.AppFramework.Runtime 1.0
import ArcGIS.AppFramework.Runtime.Controls 1.0
import ArcGIS.AppFramework.Runtime 1.0

App id: app
width: 800
height: 532

property double scaleFactor: AppFramework.displayScaleFactor
property string errorMsg

Map id: mainMap
anchors.fill: parent
extent: usExtent
focus: true

SimpleMarkerSymbol id: simpleMarkerSymbolLocation
color: "red"
style: Enums.SimpleMarkerSymbolStyleCross
size: 10
>

SimpleMarkerSymbol id: simpleMarkerSymbolReverseLocation
color: "blue"
style: Enums.SimpleMarkerSymbolStyleDiamond
size: 10
>

GraphicsLayer id: graphicsLayerGeocode
>

GraphicsLayer id: graphicsLayerReverse
>

Graphic id: locationGraphicReverse
symbol: simpleMarkerSymbolReverseLocation
>

Graphic id: locationGraphicGeocode
symbol: simpleMarkerSymbolLocation
>

Envelope id: usExtent
xMax: -15000000
yMax: 2000000
xMin: -7000000
yMin: 8000000
spatialReference: mainMap.spatialReference
>

onMouseClicked: graphicsLayerReverse.removeAllGraphics();
var graphic1 = locationGraphicReverse.clone();
graphic1.geometry = mouse.mapPoint;
graphicsLayerReverse.addGraphic(graphic1);
locator.reverseGeocode(mouse.mapPoint, 500, mainMap.spatialReference);
>
>

onFindStatusChanged: if (findStatus === Enums.FindStatusCompleted) progressBar.visible = false;
if (findResults.length < 1) showError("No address Found");
> else for (var i = 0; i < findResults.length; i++) var result = findResults ;
var graphic = locationGraphicGeocode.clone()
graphic.geometry = result.location;
graphicsLayerGeocode.addGraphic(graphic);
>
mainMap.zoomTo(graphic.geometry);
>
> else if (findStatus === Enums.FindStatusErrored) progressBar.visible = false;
showError(findError.message + "\nNo Address Found");
>
>

onReverseGeocodeStatusChanged: if (reverseGeocodeStatus === Enums.ReverseGeocodeStatusCompleted) searchBox.descriptionTextVisibility = true;
searchBox.descriptionTextInput = "Address: "
var address = reverseGeocodeResult.addressFields["Address"];
var city = reverseGeocodeResult.addressFields["City"];
var state = reverseGeocodeResult.addressFields["Region"];
var zip = reverseGeocodeResult.addressFields["Postal"];
searchBox.descriptionTextInput += address + " " + city + ", " + state + " " + zip;
> else if (reverseGeocodeStatus === Enums.ReverseGeocodeStatusErrored) showError(reverseGeocodeError.message + "\nNo Address Found");
searchBox.descriptionTextVisibility = false;
>
>
>

LocatorFindParameters id: findTextParams
text: searchBox.searchTextInput
outSR: mainMap.spatialReference
maxLocations: 1
searchExtent: usExtent
sourceCountry: "US"
>

SearchBox id: searchBox

anchors left: parent.left
top: parent.top
margins: 20 * scaleFactor
>

onSearch: findTextParams.text = searchBox.searchTextInput
graphicsLayerGeocode.removeAllGraphics();
locator.find(findTextParams);
progressBar.visible = true;
>

onClear: mainMap.extent = usExtent;
mainMap.mapRotation = 0;
graphicsLayerGeocode.removeAllGraphics();
graphicsLayerReverse.removeAllGraphics();
searchBox.descriptionTextInput = "";
searchBox.searchTextInput.focus = true;
searchBox.descriptionTextVisibility = false;
searchBox.searchTextInput = "";
>

Keys.onReturnPressed: findTextParams.text = searchBox.searchTextInput
graphicsLayerGeocode.removeAllGraphics();
locator.find(findTextParams);
progressBar.visible = true;
Qt.inputMethod.hide();
>
>

Row anchors horizontalCenter: parent.horizontalCenter
bottom: mainMap.bottom
bottomMargin: 5 * scaleFactor
>

ProgressBar id: progressBar
indeterminate: true
visible: false
>
>


MessageDialog id: messageDialog
title: "Error"
icon: StandardIcon.Warning
modality: Qt.WindowModal
standardButtons: StandardButton.Ok
text: errorMsg
>

Rectangle id: rectangleBorder
anchors.fill: parent
color: "transparent"
border width: 0.5 * scaleFactor
color: "black"
>
>

function showError(errorString) errorMsg = errorString;
messageDialog.visible = true;
>
>

Any Info would be greatly appreciated.

"Tasadduq Hussain"