Unable to merge dex in ionic

My package.json

{
“name”: “virtual-2”,
“version”: “0.0.1”,
“author”: “Ionic Framework”,
“homepage”: “http://ionicframework.com/”,
“private”: true,
“scripts”: {
“clean”: “ionic-app-scripts clean”,
“build”: “ionic-app-scripts build”,
“lint”: “ionic-app-scripts lint”,
“ionic:build”: “ionic-app-scripts build”,
“ionic:serve”: “ionic-app-scripts serve”
},
“dependencies”: {
"@angular/animations": “^5.1.2”,
"@angular/common": “5.0.3”,
"@angular/compiler": “5.0.3”,
"@angular/compiler-cli": “5.0.3”,
"@angular/core": “5.0.3”,
"@angular/forms": “5.0.3”,
"@angular/http": “5.0.3”,
"@angular/platform-browser": “5.0.3”,
"@angular/platform-browser-dynamic": “5.0.3”,
"@ionic-native/barcode-scanner": “^4.5.3”,
"@ionic-native/core": “4.4.0”,
"@ionic-native/facebook": “^4.5.2”,
"@ionic-native/geolocation": “^4.5.2”,
"@ionic-native/google-plus": “^4.5.2”,
"@ionic-native/splash-screen": “4.4.0”,
"@ionic-native/status-bar": “4.4.0”,
"@ionic/pro": “1.0.16”,
"@ionic/storage": “2.1.3”,
“chilean-rut”: “^1.0.24”,
“commonjs”: “0.0.1”,
“cordova-android”: “~7.0.0”,
“cordova-plugin-compat”: “^1.2.0”,
“cordova-plugin-device”: “^1.1.7”,
“cordova-plugin-facebook4”: “^1.9.1”,
“cordova-plugin-geolocation”: “^3.0.0”,
“cordova-plugin-googleplus”: “^5.2.1”,
“cordova-plugin-ionic-webview”: “^1.1.16”,
“cordova-plugin-splashscreen”: “^4.1.0”,
“cordova-plugin-whitelist”: “^1.3.3”,
“ionic-angular”: “3.9.2”,
“ionic-plugin-keyboard”: “^2.2.1”,
“ionicons”: “3.0.0”,
“ng2-charts”: “^1.6.0”,
“ngx-qrcode2”: “0.0.5”,
“phonegap-plugin-barcodescanner”: “^7.0.2”,
“rxjs”: “5.5.2”,
“sw-toolbox”: “3.6.0”,
“zone.js”: “0.8.18”
},
“devDependencies”: {
"@ionic/app-scripts": “3.1.6”,
“typescript”: “2.4.2”
},
“description”: “An Ionic project”,
“cordova”: {
“plugins”: {
“ionic-plugin-keyboard”: {},
“cordova-plugin-whitelist”: {},
“cordova-plugin-device”: {},
“cordova-plugin-splashscreen”: {},
“cordova-plugin-ionic-webview”: {},
“cordova-plugin-geolocation”: {
“GEOLOCATION_USAGE_DESCRIPTION”: “Localizar Iglesias”
},
“cordova-plugin-facebook4”: {
“APP_ID”: “333325963746280”,
“APP_NAME”: “bishop”
},
“cordova-plugin-googleplus”: {
“REVERSED_CLIENT_ID”: “myreversedclientid”
},
“phonegap-plugin-barcodescanner”: {
“CAMERA_USAGE_DESCRIPTION”: " "
},
“cordova-plugin-compat”: {}
},
“platforms”: [
“android”
]
}
}