nyluje nyluje - 1 year ago 331
Node.js Question

Ionic 2 Build TypeError: Cannot read property 'AssetUrl' of undefined

Ionic 2 failed CLI build giving me the following error: "TypeError: Cannot read property 'AssetUrl' of undefined".

My research lead me to this thread and this one.

Both threads suggest to modify the "package.json" file and to remove the "^" sign in front of the version in "dependencies" and "devDependencies".

I did that and then CLI:

  • ionic rm platform android

  • ionic add platform android

  • and finally: ionic build android

I still get the same error.

At some point in this thread , it suggests using some npm command I am not familiar with (yet), quoting it: "rm -rf node_modules and npm cache clean and a fresh npm install". I don't really understand what is under the hood of all this.

I would be grateful if someone come up with the magic solution to make the build run fine. But also I'd like to understand how "TypeError: Cannot read property 'AssetUrl' of undefined" could be linked with the "package.json"? I don't get why this error lead to that possible solution.

My version are:
npm 3.10.3
node 6.7.0
cordova 6.3.1
ionic 2.1.0

Here is my package.json as it looks now afer operating the suggestion read in both threads:

"name": "ionic-hello-world",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"scripts": {
"build": "ionic-app-scripts build",
"watch": "ionic-app-scripts watch",
"serve:before": "watch",
"emulate:before": "build",
"deploy:before": "build",
"build:before": "build",
"run:before": "build"
"dependencies": {
"@angular/common": "2.0.0",
"@angular/compiler": "2.0.0",
"@angular/compiler-cli": "0.6.2",
"@angular/core": "2.0.0",
"@angular/forms": "2.0.0",
"@angular/http": "2.0.0",
"@angular/platform-browser": "2.0.0",
"@angular/platform-browser-dynamic": "2.0.0",
"@angular/platform-server": "2.0.0",
"ionic-angular": "2.0.0-rc.0",
"ionicons": "3.0.0",
"@ionic/storage": "1.0.3",
"ionic-native": "2.0.3",
"rxjs": "5.0.0-beta.12",
"zone.js": "0.6.21"
"devDependencies": {
"@ionic/app-scripts": "0.0.36",
"typescript": "2.0.3"
"description": "HelloWorld: An Ionic project",
"cordovaPlugins": [
"cordovaPlatforms": []

Answer Source

I did in CLI within the folder of the projet an "npm install" + take away "^" sign in front of "dependencies" and "devDependencies" in package.json (as advised in the forum threads which are linked in my question). And it solved it.

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