[Dúvida] Erro em Flutter com o initialRoute.

Olá, recentemente estava fazendo o curso de Flutter e estava conseguindo acessar a aplicação normalmente, a partir da aula 8 de navegação conforme eu mudei a aplicação para as rotas serem do tipo nomeada o seguinte erro apareceu:

lib/main.dart:21:21: Error: The getter 'home' isn't defined for the class 'MyApp'.

• 'MyApp' is from 'package:proj/main.dart' ('lib/main.dart'). Try correcting the name to the name of an existing getter, or defining a getter or field named 'home'. initialRoute: home, ^^^^

Failed to compile application.

RouteGenerator:

class RouteGenerator {
  static Route<dynamic> generateRoute(RouteSettings settings) {

    final args = settings.arguments;

    switch (settings.name) {
      case 'home':
        return MaterialPageRoute(builder: (_) => HomeScreen());
      case 'login':
        return MaterialPageRoute(builder: (_) => LoginScreen());
      case 'sing-up':
        return MaterialPageRoute(builder: (_) => SingupScreen());
      case 'favorites':
        return MaterialPageRoute(builder: (_) => FavoritesScreen());
      case 'profile':
        return MaterialPageRoute(builder: (_) => ProfileScreen());
      case 'payment':
        return MaterialPageRoute(builder: (_) => PaymentScreen());
      case 'producer_details':
        if (args is Producer) {
          return MaterialPageRoute(
              builder: (_) => ProducerDetailsScreen(producer: args));
        }
        return _errorRoute();

      case 'package_details':
        if (args is Package) {
          return MaterialPageRoute(
              builder: (_) => PackageDetailsScreen(
                  package: args));
        }
        return _errorRoute();

      default:
        _errorRoute();
    }
  }

  static Route<dynamic> _errorRoute() {
    return MaterialPageRoute(builder: (_) {
      return Scaffold(
        appBar: AppBar(
          backgroundColor: AppColors.green,
          title: Text('Erro'),
        ),
        body: Center(child: Text('ERRO, rota não encontrada')),
      );
    });
  }
}

Main:

`import 'package:flutter/material.dart';
import 'package:proj/route_generator.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {




  @override
  Widget build(BuildContext context)  {

return MaterialApp(
  debugShowCheckedModeBanner: false,
  theme: ThemeData(
    fontFamily: 'Montserrat',
  ),
  initialRoute: home,
  onGenerateRoute: RouteGenerator.generateRoute,
);

} }`