Module AppRegistry is not registered callable module (calling runApplication)

Question

I am using native base for making app in react-native. I am new to both things. When I run the app It gives me this error:

Here is my code:

Answer 1

In my case, trying npm start -- --reset-cache and getting a bunch more errors, I deleted (uninstalled) the app from iOS and Android and yarn ios yarn android did the trick. (If this does not work for you, please kindly DO NOT give me a thumb down. Encourage people to speak, do not discourage them.)