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I am trying to deploy on testflight a detached Expo project by uploading it to the appstore via XCode. But when the downloaded app on my phone tries to use any native library, it crashes with the following error: 

undefined is not an object (evaluating "native function’s name" (code 1)

The app works fine in the local environment.

Does anyone know how to do this?. I want to use Expo, but if I can't fix this, I'll have to go with react-native alone.

Tom Aranda
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Fernando Caride
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    Hey there! This is impossible to debug with such little information, and these types of issues aren't a great fit for StackOverflow. If you join the Expo Slack (http://slack.expo.io/) or post about the issue in the forums (http://forums.expo.io/), it will be easier to have a back-and-forth discussion. Thanks! – brentvatne Nov 03 '17 at 23:12
  • Agree with @brentvatne, you could also open an issue on their GitHub https://github.com/expo/expo/issues – EnriqueDev Nov 04 '17 at 10:07

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