I'm using react native to build an android app, but i am having an issue. The issue is whenever i connect the app to my android device (via USB) or emulator, the app display a white blank screen. But if i open the app offline (if not connected to the react native development server), the app display the contents in the app ('app.js' code). I'm beginner in react native app development (this is my first time). I don't know why the app is behaving like that. Any help will be highly appreciated