       navigationController?.navigationBar.barTintColor = ViewController.lightColors.primary
       navigationController?.navigationBar.barStyle = .`default`
       navigationController?.navigationBar.titleTextAttributes = [
-        NSForegroundColorAttributeName: UIColor.black
+        NSAttributedStringKey.foregroundColor: UIColor.black
       ]
       tableView.separatorColor = .gray
       tableView.backgroundColor = UIColor(red: 0.94, green: 0.94, blue: 0.94, alpha: 1)

      navigationController?.navigationBar.barTintColor = ViewController.darkColors.primary
      navigationController?.navigationBar.barStyle = .black
      navigationController?.navigationBar.titleTextAttributes = [
        NSForegroundColorAttributeName: UIColor.white
      ]
      tableView.separatorColor = .lightGray
      tableView.backgroundColor = ViewController.darkColors.secondary

    }
  }

  @objc func printInstanceIDToken() {
    let instanceID = InstanceID.instanceID().token() ?? "null"
    print("InstanceID token: \(instanceID)")
  }
