In the above image, you can see that the app has been built successfully and has started the metro bundler.

If I try to click on R, It is saying that no device is connected even though the app is running on an emulator.

The above is the screen I'm seeing once the building completes and the app is opened. A blank white screen.

Below is my index.js file

import "expo-asset";
import { AppRegistry, View } from "react-native";
import App from "./App";
import { name as appName } from "./app.json";

AppRegistry.registerComponent(appName, () => App);