Require Error during initialization or failure to call AppRegistry.registerComponent

I used an online available resource to create a trial mobile app using React-Native framework and was successful in deploying on localhost. But as the next step I created the bundle of the app and try to deploy it on mobile using app bundle. But after installation on initialization I am getting this error. I had done nothing in the code, so not much aware of the code but want to complete this. Pls help.

What I understand from browsing the online resources is that these errors are caused due to incorrect sequence followed for app deployment, basically I need the correct sequence of commands to be executed to make this sample app operational.