react native ios build failed code example

Example: React Native BUILD FAILED on run-ios

rm -rf ~/Library/Caches/CocoaPods
rm -rf Pods
rm -rf ~/Library/Developer/Xcode/DerivedData/*
pod deintegrate
pod setup

And delete the project's Pods directory. The location of it is project directory > ios > Pods.
Then in the project directory > ios location, install pod with pod install
And react-native run-ios in project directory.