xcode 10 error: multiple commands produce - react native

Question

So there are a lot of questions like this already, but I\'m having the same error, not relating to cocoapods or info.plist, at least I don\'t think, because

Answer 1

I fixed it by upgrading cocoapods to the latest version:

1. Close Xcode project.
2. Upgrade cocoapods to latest version - run "sudo gem install cocoapods"
3. Follow steps here to remove existing pods
4. Run "pod install" in the project directory

Answer 2

I have resolved my issue in Xcode 10.2 through below steps:

change the build system to Legacy

File > Workspace Settings > Build System > Legacy Build System.

Answer 3

For those using React Native and Cocoapods

The issue was produced by some libRN...a files. I fixed it by removing some of them like libRNScreens.a and libRNGestureHandler.a from Build Phases -> Link Binary with Libraries since they were already being referenced from another libraries. Others had to be replaced by their Pod version like libRNDeviceInfo.a: