How do you fix this error net::ERR_CACHE_MISS in an Android app built using Android Studio?

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. ========= <?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="@s...