React Native Ios App Crashes On Launch

I just ran react native run ios configuration release and i can recreate what s happening on the phone on the simulator now.
React native ios app crashes on launch. App crashes on launch. The problem is that when i run react native run android the app crashes immediately. Learn more about how to fix crashing ios app on launch using react native.
Run react native info in your terminal and copy the results here. It started happening after upgrading from react native 0 44 0 49 5. I found the problem the issue is with react native maps.
Below are the errors we get on the xcode console when we try to launch the release build on simulator. I used version 3 9 0 and build was launching. We tried lot s of solutions and also found issues in react native github repo.
Working fine on debug and release in simulators. Design for facebook authentication in an ios app that also accesses a secured web service. App should not crash on launch.
After upgrade to version 3 9 1 app crashes on launch. The app should open without crashing. Also getting this from appstore review after uploading to appstore.
So i have removed them from my package json. 16 8 3 16 8 3 react native. 2019 04 26 15 28 54 163 fatal tid com facebook react exceptionsmanagerqueue unhandled js exception.