Android app error net::ERR_CACHE_MISS and a fix

 I am a Windows Phone developer trying to get into Android App development.

I have been working with Android app development for the past couple of days with the latest Android Studio. 

I finally got an app that can display an URL . I had an important line missing in my Manifest file and when I corrected this it worked. It has to do with the browser permissions.

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<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.mywview">

<uses-permission android:name="android.permission.INTERNET"/>

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/Theme.MyWView">

        <activity

            android:name=".MainActivity"

            android:exported="true">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

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Without this element highlighted in the above in the XML I was getting this error:

After adding this line to the Manifest I could get it working:

The app was deployed to the Galaxy S21+5G.