# Ionic cordova run android fails

**URL:** <https://forum.ionicframework.com/t/ionic-cordova-run-android-fails/106154>\
**Category:** ionic-v3\
**Created:** [September 20, 2017, 9:27pm UTC](https://forum.ionicframework.com/t/ionic-cordova-run-android-fails/106154 "2017-09-20T21:27:35Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jun711](https://avatars.discourse-cdn.com/v4/letter/j/2bfe46/32.png) [@Jun711](https://forum.ionicframework.com/u/Jun711)\
**Post date:** [September 20, 2017, 9:27pm UTC](https://forum.ionicframework.com/t/ionic-cordova-run-android-fails/106154/1 "2017-09-20T21:27:35Z")

</div>

Hi,

I go the following error message with ionic cordova run android command. I think I messed up with the android env variables. Anyone knows how to fix this? Thanks!

```auto
FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'android'.
> java.lang.NullPointerException (no error message)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or 
--debug option to get more log output.

BUILD FAILED

```

ionic info

```auto
cli packages: (/Users/J/.nvm/versions/node/v8.2.1/lib/node_modules)

    @ionic/cli-utils : 1.10.2
    ionic (Ionic CLI) : 3.10.3

global packages:

    Cordova CLI : 6.5.0 

local packages:

    @ionic/app-scripts : 2.1.4
    Cordova Platforms : android 6.2.3 ios 4.4.0
    Ionic Framework : ionic-angular 3.6.1

System:

    Android SDK Tools : 24.4.1
    ios-deploy : 1.9.2 
    ios-sim : 6.0.0 
    Node : v8.2.1
    npm : 5.2.0 
    OS : macOS Sierra
    Xcode : Xcode 8.3.2 Build version 8E2002 

```

sdkmanager info:

```auto
Installed packages:=====================] 100% Computing updates...             
  Path | Version | Description | Location                    
  ------- | ------- | ------- | -------                     
  build-tools;25.0.2 | 25.0.2 | Android SDK Build-Tools 25.0.2 | build-tools/25.0.2/         
  build-tools;26.0.1 | 26.0.1 | Android SDK Build-Tools 26.0.1 | build-tools/26.0.1/         
  emulator | 26.1.4 | Android Emulator | emulator/                   
  extras;android;m2repository | 47.0.0 | Android Support Repository | extras/android/m2repository/
  extras;google;m2repository | 58 | Google Repository | extras/google/m2repository/ 
  patcher;v4 | 1 | SDK Patch Applier v4 | patcher/v4/                 
  platform-tools | 26.0.0 | Android SDK Platform-Tools | platform-tools/             
  platforms;android-24 | 2 | Android SDK Platform 24 | platforms/android-24/       
  platforms;android-25 | 3 | Android SDK Platform 25 | platforms/android-25/       
  tools | 26.1.1 | Android SDK Tools | tools/                    

```

---

<div class="post-metadata">

**Author:** ![YousefRabieKhalil](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/yousefrabiekhalil/32/118931_2.png) [@YousefRabieKhalil](https://forum.ionicframework.com/u/YousefRabieKhalil)\
**Post date:** [September 20, 2017, 9:32pm UTC](https://forum.ionicframework.com/t/ionic-cordova-run-android-fails/106154/2 "2017-09-20T21:32:35Z")

</div>

what about removing android platform and re-add it again ?

```auto
ionic cordova platform remove android

```

then

```auto
ionic cordova platform add android

```

---

<div class="post-metadata">

**Author:** ![Jun711](https://avatars.discourse-cdn.com/v4/letter/j/2bfe46/32.png) [@Jun711](https://forum.ionicframework.com/u/Jun711)\
**Post date:** [September 20, 2017, 9:42pm UTC](https://forum.ionicframework.com/t/ionic-cordova-run-android-fails/106154/3 "2017-09-20T21:42:25Z")

</div>

I have tried adding and removing platforms. thanks