After painfully starting from a bare-bones react-native expo app and adding functionality bit by bit, I found the issue was the stack navigator code. Once I had it narrowed down to that, I found that I missed installing the support packages necessary for stack navigation:
npm install react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context @react-native-community/masked-view
And that you have to include:
import 'react-native-gesture-handler';
At the top of your App.js file - but in my case, I had two files with stack navigation so it wasn't enough to include that import just in App.js but also in that other file.
Once I did this, no more crashes!
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
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