Create a new project and pod 'JSONSchema' After pod install in a fresh project and compile. It is showing, No reference to this variables error.. <img width="895" alt="Screenshot 2021-10-07 at 4 36 54 PM" src="https://user-images.githubusercontent.com/30654850/136372980-adf341ee-48a3-484f-8608-d1fe7808434f.png">