React-Native Expo app suddenly will not run because of Invariant Violation: 'main' has not been registered

Question

Im using expo to build a react native app, and it has been working totally fine for days now. However, out of no where, it started to give me an Invariant Violation: 'main' has not been registered issue, and preventing me from building the app. Here is a photo. Error as well as AppEntry.js file

Also, I am relatively new to expo and react-native in general, so there are some things I don't understand still. I have searched everywhere for an answer, but nothing has worked.

Answer 1

quick solution that worked for me

1. Delete your node_modules folder
2. Delete your yarn.lock file (if you are using yarn)
3. Run your installs again npm i or yarn (if you are using yarn)