Try the following:
Clean (cmd+shift+K)
Build core React - select React as the scheme in Xcode and build it (cmd+B)
Build the library that is failing (e.g. RCTText).
Build your app.
Try the following:
Clean (cmd+shift+K)
Build core React - select React as the scheme in Xcode and build it (cmd+B)
Build the library that is failing (e.g. RCTText).
Build your app.