Xcode : warning: directory not found for option [duplicate]
In Target > Build Settings:
Look for Search Paths > Framework Search Paths, delete all paths which you have been warned; then in Library Search Paths, delete all paths which you have been warned.
I found this post looking for the same issue. However, my issue was that some framework was added then deleted and thus causing this error. After doing a clean on the project I was all good.
Product --> Clean