After downgrading from 6 to 5 I get malformed package.json error

Hi there,

I recently downgraded my version of ionic from 6 to 5 as my new project is built within 5. Since then whenever I try to serve i get an error saying my package.json is malformed. When i try to run anything else I get INVALID_PACKAGE_JSON.

I have included my package.json below. Any help would be much appropriated.

{
  "name": "jit",
  "version": "1.0.0",
  "description": "An Ionic project",
  "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/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/android-permissions": "^4.7.0",
    "@ionic-native/background-geolocation": "^4.6.0",
    "@ionic-native/barcode-scanner": "^4.7.0",
    "@ionic-native/core": "4.4.0",
    "@ionic-native/geolocation": "^4.8.0",
    "@ionic-native/http": "^4.11.0",
    "@ionic-native/ibeacon": "^4.7.0",
    "@ionic-native/native-audio": "^5.30.0",
    "@ionic-native/network": "^4.8.0",
    "@ionic-native/splash-screen": "4.4.0",
    "@ionic-native/sqlite": "^4.10.1",
    "@ionic-native/status-bar": "^4.4.0",
    "@ionic-native/uid": "^4.10.1",
    "@ionic-native/web-intent": "^4.9.0",
    "@ionic-native/wheel-selector": "^4.7.0",
    "@ionic/pro": "1.0.19",
    "@ionic/storage": "2.1.3",
    "com-darryncampbell-cordova-plugin-intent": "^1.1.0",
    "com.unarin.cordova.beacon": "~3.6.1",
    "cordova-android": "^7.0.0",
    "cordova-android-support-gradle-release": "^3.0.1",
    "cordova-browser": "5.0.4",
    "cordova-plugin-advanced-http": "^1.11.1",
    "cordova-plugin-android-permissions": "^1.0.0",
    "cordova-plugin-crosswalk-webview": "^2.4.0",
    "cordova-plugin-device": "^2.0.2",
    "cordova-plugin-file": "^6.0.1",
    "cordova-plugin-geolocation": "^4.0.1",
    "cordova-plugin-ibeacon": "^3.6.1",
    "cordova-plugin-ionic": "^4.1.6",
    "cordova-plugin-ionic-keyboard": "^2.0.5",
    "cordova-plugin-nativeaudio": "^3.0.9",
    "cordova-plugin-network-information": "^2.0.1",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-statusbar": "^2.4.1",
    "cordova-plugin-uid": "^1.3.0",
    "cordova-plugin-whitelist": "^1.3.3",
    "cordova-sqlite-storage": "^2.3.3",
    "cordova-wheel-selector-plugin": "^1.1.0",
    "howler": "^2.2.1",
    "ion-multi-picker": "^2.1.2",
    "ionic-angular": "3.9.2",
    "ionicons": "3.0.0",
    "motorola-datawedge-cordova-plugin-master": "git+https://github.com/BlueFletch/motorola-datawedge-cordova-plugin.git",
    "phonegap-plugin-barcodescanner": "^7.1.2",
    "rxjs": "5.5.2",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.8.18"
  },
  "devDependencies": {
    "@ionic/app-scripts": "3.2.4",
    "@ionic/lab": "3.2.12",
    "com.unarin.cordova.beacon": "^3.6.1",
    "typescript": "2.4.2",
    "ws": "^3.3.2"
  },
  "cordova": {
    "plugins": {
      "cordova-plugin-ionic-keyboard": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-whitelist": {},
      "cordova-plugin-statusbar": {},
      "cordova-wheel-selector-plugin": {},
      "cordova-plugin-crosswalk-webview": {},
      "cordova-plugin-device": {},
      "cordova-plugin-geolocation": {
        "GEOLOCATION_USAGE_DESCRIPTION": "To locate you"
      },
      "cordova-sqlite-storage": {},
      "cordova-plugin-android-permissions": {},
      "phonegap-plugin-barcodescanner": {
        "ANDROID_SUPPORT_V4_VERSION": "27.+"
      },
      "com.unarin.cordova.beacon": {},
      "cordova-plugin-network-information": {},
      "com-darryncampbell-cordova-plugin-intent": {},
      "cordova-plugin-advanced-http": {},
      "cordova-android-support-gradle-release": {
        "ANDROID_SUPPORT_VERSION": "27.+"
      },
      "cordova-plugin-nativeaudio": {}
    },
    "platforms": [
      "browser"
    ]
  }
}