AppAuth : issue when renewing authorization code : "attempting to load the view of a view controller while it is deallocating is not allowed"

Code Block import UIKit
import AppAuth
import AuthenticationServices
var isLoginViewOn: Bool = false
var isConnectionBtnPressed: Bool = false
class ContainerController: UIViewController {
// MARKS : Properties
private var authState: OIDAuthState?
var token: String?
var menuController: MenuController!   
var homeController: HomeController!
var panView: UIView!
var isExpanded = false
var isLoginOut: Bool = false
let loginView: UIImageView = {
    let v = UIImageView()
    v.image = UIImage(named: "")
    v.contentMode = .scaleAspectFit
    return v
}()
let connexionButton: UIButton = {
    let b = UIButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
    return b
}()
let logoutBtn: UIButton = {
    let b = UIButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
    b.setTitle("déconnexion", for: .normal)
    return b
}()
override func viewDidLoad() {
    super.viewDidLoad()
     chekToken()   
}
override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    if isLoginViewOn == true {
        if isConnectionBtnPressed == false {
            self.connexionButton.sendActions(for: .touchUpInside)
            isLoginViewOn = false
        } 
    }
}
    override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()
    view.layoutIfNeeded()
    view.layoutSubviews()
}
/////////////////////////////////////////////////////////////////////////////
///                                 SET UP                               ////
/////////////////////////////////////////////////////////////////////////////
func setupLoginView() {
    print("setup loginView")
    isLoginViewOn = true
    view.addSubview(loginView)
    view.addSubview(connexionButton)
    loginView.translatesAutoresizingMaskIntoConstraints = false
    connexionButton.translatesAutoresizingMaskIntoConstraints = false
    [
        loginView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
        loginView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
        loginView.widthAnchor.constraint(equalToConstant: 250),
        loginView.heightAnchor.constraint(equalToConstant: 128),
        connexionButton.bottomAnchor.constraint(equalTo: loginView.topAnchor, constant: -50),
        connexionButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
        connexionButton.widthAnchor.constraint(equalToConstant: 200),
        connexionButton.heightAnchor.constraint(equalToConstant: 50),
        ].forEach{$0.isActive = true }
    connexionButton.addTarget(self, action: #selector(buttonAction(_:)), for: .touchUpInside)
    if isConnectionBtnPressed == false {
        self.connexionButton.sendActions(for: .touchUpInside)
    }
}
func setupHomeController() {
    homeController = HomeController()
    homeController.delegate = self 
    addControllerAsChild(forController: homeController)
    setupPanView(forController: homeController)
}
}