Updating react-native makes my app not load?

I’m developing mostly in an iOS simulator. Usually Simulator with the Expo app runs my app no problem, but I just did npx react-native upgrade and now my app is replaced with the dotted line square screen. How do I fix my app?

Is this question in the right place?

You’ll need to provide a lot more details.

Given you’re using react-native upgrade I assume you have ejected to the Bare workflow? If so you should probably post to the “Help: Bare Workflow” category.

Perhaps you should revert to the version of your app from before you ran npx react-native and then read the documentation on how to upgrade a Bare Expo app.