Failing to access local media in react native <WebView/>

I'm learning a bit about webRTC and react-native and am trying to load the webRTC demo site inside a react-native app.

So I've put this in the index.android.js:

import React, {Component} from 'react';
import {AppRegistry, StyleSheet, Text, WebView} from 'react-native';

export default class testRTC extends Component {
  render() {
    return (
      <WebView
        source={{uri:'https://appr.tc/r/<Any random room number>'}}
        />
    );
  }
}

AppRegistry.registerComponent('testRTC', () => testRTC);

But when running react-native run-android, when the WebView loads I get the following message: "Failed to get access to local media. Error name was NotAllowedError" I've tried adding the following permissions to the AndroidManifest.xml, unsuccesfully:

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus"/>

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

I'm trying to undersatnd what I'm missing so I can load the demo app in my testRTC react-native app