Xcode 11 Upgrade | Could not find iPhone X simulator | XRPackageModel 9.0.omo

Question

Anyone else getting this since upgrading from Xcode 10.3 to Xcode 11 when running react-native run-ios and any idea to get back up and running?

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Answer 1

The problem is that you are using a @react-native/cli version that doesn't detect XCode 11 simulators. You can either downgrade your XCode or install a @react-native/cli that supports it.

If you are not managing the version of @react-native/cli directly in your package.json you can simply remove your package-lock.json or yarn.lock file and install it again:

rm yarn.lock 
yarn install

or

rm package-lock.json
npm install