My Xcode app is crashing over and over again . Whenever I am editing or clicking somewhere in my xcode project it keeps shutting down . Please help me

GIDSignIn.sharedInstance.signIn(with: config, presenting: rootViewController()) { user, error in // (The error is showing at the signIn function )      if let error = error {       // ...       return      }      guard       let authentication = user.authentication,       let idToken = authentication.idToken      else {       return      }      let credential = GoogleAuthProvider.credential(withIDToken: idToken,                              accessToken: authentication.accessToken)

I have been trying to enable in app purchase in sandbox environment but instead it keeps performing transactions in Xcode. Also Apple says in its docs to set up sandbox tester account in Settings > App store without signing out from the non sandbox account, and says the sign in will appear as soon as we perform a transaction on device, but it does not worked for me I have ensured and tried following things: Created sand box tester id Storekit configured , all the plans fetched Has development team Tried signing in Sandbox account Checked whether I am testing in production or development build by if else (It was in development) Tested on real device Please help me get through this