App immediately crashed and closed after showing the launch screen

[kevinlin505]

Environment

System: OS: macOS 10.15.7 CPU: (8) x64 Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz Memory: 984.95 MB / 16.00 GB Shell: 5.7.1 - /bin/zsh Binaries: Node: 10.22.0 - ~/.nvm/versions/node/v10.22.0/bin/node Yarn: 1.13.0 - /usr/local/bin/yarn npm: 6.14.6 - ~/.nvm/versions/node/v10.22.0/bin/npm Watchman: 4.7.0 - /usr/local/bin/watchman Managers: CocoaPods: 1.9.1 - /Users/kevinlin/.rvm/rubies/ruby-2.6.5/bin/pod SDKs: iOS SDK: Platforms: iOS 14.3, DriverKit 20.2, macOS 11.1, tvOS 14.3, watchOS 7.2 Android SDK: Not Found IDEs: Android Studio: 3.6 AI-192.7142.36.36.6308749 Xcode: 12.3/12C33 - /usr/bin/xcodebuild Languages: Java: 1.8.0_242 - /usr/bin/javac Python: 2.7.16 - /usr/bin/python npmPackages: @react-native-community/cli: Not Found react: 16.13.1 => 16.13.1 react-native: 0.63.4 => 0.63.4 react-native-macos: Not Found npmGlobalPackages: react-native: Not Found

Things I’ve done to figure out my issue

• [x] I used upgrade-helper to do my upgrade.
• [x] I have followed the steps from Upgrade supporthttps://github.com/react-native-community/upgrade-support/issues/13

Upgrading version

0.61.4 -> 0.63.4

Description

After making all the updates from the upgrade-helper diff and following the steps from the upgrade support solution thread, I am not seeing any issues when building on Xcode or on command. However, when I try to run the app, it shows the LaunchScreen for a quick second than the app closed. However, I am not seeing anything error logs on the terminal at all. I also tried to include an exception break point within XCode but it doesn't do anything, then I tried to include break points within AppDelegate and it also doesn't do anything as well which I assume that it never hit AppDelegate.

Reproducible demo

[wontone18]

Hi some problem in react native 0.63.4 my android app also crashing similar way today.