Geocoder plugin not working

I installed the geocoder plugin in my Ionic 3 App, added it to appmodule.ts, and because it is not supported by DevApp, I build it on iOS platform and tested on a device. I am getting an error and the coordinates are not returned.

Here is my code in home.ts

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { NativeGeocoder, NativeGeocoderForwardResult, NativeGeocoderOptions } from '@ionic-native/native-geocoder';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
lat: string;
long: string;
error: boolean;

  constructor(public navCtrl: NavController, private nativeGeocoder: NativeGeocoder) {

  }

ionViewDidLoad() {

  let options: NativeGeocoderOptions = {
    useLocale: true,
    maxResults: 5
};

  this.nativeGeocoder.forwardGeocode('Berlin', options)
  .then((coordinates: NativeGeocoderForwardResult[]) => 
{  console.log('The coordinates are latitude=' + coordinates[0].latitude + ' and longitude=' + coordinates[0].longitude);
   this.lat = coordinates[0].latitude;
   this.long = coordinates[0].longitude;
   this.error = false;
})
  .catch((error: any) => {console.log(error)
  this.error = true;});
}

}

Here is my code in home.html

<ion-content padding>
    <p>LAT: {{lat}}</p>
    <p>LONG: {{long}}</p>
    <p>ERROR: {{error}}</p>
</ion-content>

The output shows ERROR: true meaning that the plugin returned an error and of course latitude and longitude does not show.

Here are the messages I got while installing the plugin:

Update IOS build setting SWIFT_OBJC_BRIDGING_HEADER to: "$(PROJECT_DIR)/$(PROJECT_NAME)/Bridging-Header.h" for build configuration Debug
Update IOS build setting SWIFT_OBJC_BRIDGING_HEADER to: "$(PROJECT_DIR)/$(PROJECT_NAME)/Bridging-Header.h" for build configuration Release
Importing NativeGeocoder-Bridging-Header.h into /Users/M/HAPPA/platforms/ios/Happa/Bridging-Header.h
Update IOS build setting ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES to: YES for build configuration Debug
Update SWIFT version to 3.0 Debug
Update IOS build setting SWIFT_OPTIMIZATION_LEVEL to: -Onone for build configuration Debug
Update IOS build setting ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES to: YES for build configuration Release
Update SWIFT version to 3.0 Release

Here is my package.json

{
  "name": "AngularApp",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "start": "ionic-app-scripts serve",
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "lint": "ionic-app-scripts lint"
  },
  "dependencies": {
    "@angular/animations": "5.2.11",
    "@angular/common": "5.2.11",
    "@angular/compiler": "5.2.11",
    "@angular/compiler-cli": "5.2.11",
    "@angular/core": "5.2.11",
    "@angular/forms": "5.2.11",
    "@angular/http": "5.2.11",
    "@angular/platform-browser": "5.2.11",
    "@angular/platform-browser-dynamic": "5.2.11",
    "@ionic-native/core": "~4.10.0",
    "@ionic-native/native-geocoder": "^4.14.0",
    "@ionic-native/splash-screen": "~4.10.0",
    "@ionic-native/status-bar": "~4.10.0",
    "@ionic/storage": "2.1.3",
    "angularfire2": "^5.0.0-rc.6",
    "cordova-ios": "~4.5.5",
    "cordova-plugin-add-swift-support": "^1.7.1",
    "cordova-plugin-device": "^2.0.2",
    "cordova-plugin-ionic-keyboard": "^2.1.2",
    "cordova-plugin-ionic-webview": "^2.1.4",
    "cordova-plugin-nativegeocoder": "^3.1.2",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "firebase": "^4.12.1",
    "ionic-angular": "3.9.2",
    "ionicons": "3.0.0",
    "rxjs": "5.5.11",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.8.26",
    "cordova-android": "~7.0.0"
  },
  "devDependencies": {
    "@ionic/app-scripts": "3.1.11",
    "typescript": "~2.6.2"
  },
  "description": "An Ionic project",
  "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-device": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-ionic-webview": {},
      "cordova-plugin-ionic-keyboard": {},
      "cordova-plugin-nativegeocoder": {
        "LOCATION_WHEN_IN_USE_DESCRIPTION": "Use geocoder service"
      }
    },
    "platforms": [
      "ios",
      "android"
    ]
  }
}

How can I debug this? I cannot see the error message in the console because I am testing on a device and do not know even what the problem could be.

I really would love to use the plugin instead of a third-party service.

Thanks.

Hey i am facing same problem, if you found the solution please help