title: React native with expo: ‘react-navigation does not exist in the haste module map’
body: <p>I’m a beginner working on my first app with react native and expo. I’m having trouble getting the navigation to work. When I run the app, I get the error ‘react-navigation does not exist in the haste module map’. I’ve installed react navigation through the command line and ran install npm to install dependancies.</p>