Google Sign In Button error when trying to login - swift

Question

I have followed all the steps of the Firebase instructions for adding a Google Sign In Button. I have two problems when I open the app I have to wait a couple of minutes before pressing the Google button otherwise it gives me an error, after the first sign in if I try more still gives me the error.
(I added all the pods, all the app delegate function requested, the url in the target section of the app, the google.key-value list, and tried all possible solutions from other similar questions)
The errors I get are
Optional(Error Domain=com.google.GIDSignIn Code=-5 "The user canceled the sign-in flow." UserInfo={NSLocalizedDescription=The user canceled the sign-in flow.})
Please if someone could help, cause I tried all stack overflow and google possibilities, and still not working.
Here is snippet of my code:
import Firebase
import GoogleSignIn
class ViewController: UIViewController {
var googleButton : GIDSignInButton!
viewDidLoad(){
self.googleButton = GIDSignInButton()
self.googleButton.style = .iconOnly
self.googleButton.frame = CGRect(x: 120, y: 300, width: 75, height: 75)
self.googleButton.addTarget(self, action: #selector(configureGoogleButton), for: .allTouchEvents)
self.view.addSubview(self.googleButton)
}
function configureGoogleButton(){
//get client Id
guard let clientID = FirebaseApp.app()?.options.clientID else {return}
let config = GIDConfiguration(clientID: clientID)
GIDSignIn.sharedInstance.signIn(with: config, presenting: self)
{ user,error in
guard error == nil else {
print("The app is not working")
print(error)
return }
guard
let authentication = user?.authentication,
let idToken = authentication.idToken
else {
return
}
let credential = GoogleAuthProvider.credential(withIDToken: idToken,
accessToken: authentication.accessToken)
self.googleCredential = credential
print(user?.profile?.email)
print(user?.profile?.name)
}
Here is part of the app delegate:
import Firebase
import UIKit
import GoogleSignIn
#main
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
FirebaseApp.configure()
return true
}
// MARK: UISceneSession Lifecycle
func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
}
func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// Called when the user discards a scene session.
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
func application(
_ app: UIApplication,
open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]
) -> Bool {
var handled: Bool
handled = GIDSignIn.sharedInstance.handle(url)
if handled {
return true
}
// Handle other custom URL types.
// If not handled by this app, return false.
return false
}
}