# New project setup, but didn't work

**URL:** <https://react-native-webrtc.discourse.group/t/new-project-setup-but-didnt-work/1089>\
**Category:** Help\
**Created:** [January 7, 2021, 3:47am UTC](https://react-native-webrtc.discourse.group/t/new-project-setup-but-didnt-work/1089 "2021-01-07T03:47:34Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![kkh975](https://yyz2.discourse-cdn.com/free1/user_avatar/react-native-webrtc.discourse.group/kkh975/32/341_2.png) [@kkh975](https://react-native-webrtc.discourse.group/u/kkh975)\
**Post date:** [January 7, 2021, 3:47am UTC](https://react-native-webrtc.discourse.group/t/new-project-setup-but-didnt-work/1089/1 "2021-01-07T03:47:34Z")

</div>

The react-native project was newly installed.  
After that, react-native-webrtc was installed with yarn.  
And I ran the android emulator with the `yarn android ` command.  
Result is app crashed.  
I just installed and set the permissions in AndroidManifest.xml file as below.

```auto
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

```

So, I downloaded the example folder and installed.  
The same phenomenon occurred when using `yarn add react-native-webrtc` without using `postinstall`.  
So, when I postinstall again, it worked.

Can you check what’s wrong?

package.json

```auto
  "dependencies": {
    "react": "16.13.1",
    "react-native": "0.63.4",
    "react-native-webrtc": "^1.87.2"
  },
  "devDependencies": {
    "@babel/core": "^7.12.10",
    "@babel/runtime": "^7.12.5",
    "@react-native-community/eslint-config": "^2.0.0",
    "babel-jest": "^26.6.3",
    "eslint": "^7.17.0",
    "jest": "^26.6.3",
    "metro-react-native-babel-preset": "^0.64.0",
    "react-test-renderer": "16.13.1"
  },

```

android emulator

- Android 10.0(Google Play) / Q
- Pixel 4 API 29