[IOS] The app crash at start

I’m using RN 0.43.2, iOS 5s (10.2) Simulator and Xcode 8.2.1.

I do well the installation steps but the app crash in iOS (I try using pod and in other copy of my project using without pod and nothing).

1. npm install react-native-fcm --save
2. react-native link react-native-fcm
3. edit Podfile and add pod 'Firebase/Messaging'
4. edit AppDelegate.h
5. edit AppDelegate.m
6. I enable the necessary Capabilities
7. In Manage schemes I remove and add the scheme of my project I do double click, click in Build and I add React and projectTest. And put in order React -> project -> projectTest.

I put the GoogleService-Info.plist file into project/ios/project/.

But I can’t do this run.

[felipemartim]

This comment solved it for me. https://github.com/evollu/react-native-fcm/issues/322#issuecomment-281678346

[vinayr]

I had the same issue. It looks like there are breaking changes in new version of Firebase pod (4.0.0). https://firebase.google.com/support/release-notes/ios#4.0.0

After downgrading it to previous version it works fine for me.

  #pod 'Firebase/Messaging'
  pod 'Firebase/Messaging', '3.17.0'