Erro "AppStore not found" para o controle de estado de tema dark e light

[Francielxyz]

Ao assistir a aula https://www.youtube.com/watch?v=wR4hWOz9Ghk não consigo reproduzir o controle de estado para deixar meu app dark ou light.

Estou utilizando o flutter_modular: ^5.0.3. (tentei utilizar as versões Prerelease para testar e não obtive sucesso

AppModule:

 class AppModule extends Module {
   @override
   List<Bind> get binds => [
         Bind.singleton((i) => AppStore()),
       ];
 }

AppWidget

class AppWidget extends StatelessWidget {
  const AppWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final appStore = context.watch<AppStore>(
      (store) => store.themeMode,
    );

    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      themeMode: appStore.themeMode.value,
      theme: lightTheme,
      darkTheme: darkTheme,
      home: const HomePage(),
    );
  }
}

Segue o erro abaixo:

I/xample.teste123(14706): Compiler allocated 4533KB to compile void android.view.ViewRootImpl.performTraversals()

======== Exception caught by widgets library =======================================================
The following BindNotFoundException was thrown building AppWidget(dirty):
AppStore not found.
#0      InjectorImpl.getBind (package:modular_core/src/di/injector.dart:24:7)
#1      BindServiceImpl.getBind (package:flutter_modular/src/infra/services/bind_service_impl.dart:21:31)
#2      GetBindImpl.call (package:flutter_modular/src/domain/usecases/get_bind.dart:16:24)
#3      ModularBase.getBindEntry (package:flutter_modular/src/presenter/modular_base.dart:136:22)
#4      _ModularInherited.of (package:flutter_modular/src/presenter/widgets/modular_app.dart:98:27)
#5      ModularWatchExtension.watch (package:flutter_modular/src/presenter/widgets/modular_app.dart:186:30)
#6      AppWidget.build (package:teste123/src/shared/app_widget.dart:12:30)
#7      StatelessElement.build (package:flutter/src/widgets/framework.dart:4949:49)
#8      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4878:15)
#9      Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5)
#10     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4859:5)
#11     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4853:5)
#12     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3863:16)
#13     Element.updateChild (package:flutter/src/widgets/framework.dart:3592:18)
#14     RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1195:16)
#15     RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1164:5)
#16     RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:1111:18)
#17     BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2605:19)
#18     RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1110:13)
#19     WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:945:7)
#20     WidgetsBinding.scheduleAttachRootWidget.<anonymous closure> (package:flutter/src/widgets/binding.dart:925:7)
#21     Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:18:15)
#22     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:398:19)
#23     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:429:5)
#24     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:192:12)

The relevant error-causing widget was: 
  AppWidget AppWidget:file:///E:/Front-end/teste123/lib/main.dart:5:16
When the exception was thrown, this was the stack: 
#0      ModularBase.getBindEntry.<anonymous closure> (package:flutter_modular/src/presenter/modular_base.dart:141:7)
#1      _Left.getOrElse (package:flutter_modular/src/shared/either.dart:51:18)
#2      ModularBase.getBindEntry (package:flutter_modular/src/presenter/modular_base.dart:136:25)
#3      _ModularInherited.of (package:flutter_modular/src/presenter/widgets/modular_app.dart:98:27)
#4      ModularWatchExtension.watch (package:flutter_modular/src/presenter/widgets/modular_app.dart:186:30)
#5      AppWidget.build (package:teste123/src/shared/app_widget.dart:12:30)
#6      StatelessElement.build (package:flutter/src/widgets/framework.dart:4949:49)
#7      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4878:15)
#8      Element.rebuild (package:flutter/src/widgets/framework.dart:4604:5)
#9      ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4859:5)
#10     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4853:5)
#11     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3863:16)
#12     Element.updateChild (package:flutter/src/widgets/framework.dart:3592:18)
#13     RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1195:16)
#14     RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1164:5)
#15     RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:1111:18)
#16     BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2605:19)
#17     RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1110:13)
#18     WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:945:7)
#19     WidgetsBinding.scheduleAttachRootWidget.<anonymous closure> (package:flutter/src/widgets/binding.dart:925:7)

Flutter Doctor

PS E:\Front-end\teste123> flutter
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[X] Visual Studio - develop for Windows
    X Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2021.3)
[√] IntelliJ IDEA Ultimate Edition (version 2022.3)
[√] Connected device (4 available)
[√] HTTP Host Availability

! Doctor found issues in 2 categories.
PS E:\Front-end\teste123>

[eduardoflorence]

Olá @Francielxyz, com o Modular, você não deve utilizar MaterialApp e sim MaterialApp.router, definindo as propriedades routeInformationParser e routerDelegate.
Por você não estar iniciando corretamente, os Binds de AppModule não estão sendo carregados na rota inicial.

Veja um exemplo aqui na documentação: https://modular.flutterando.com.br/docs/flutter_modular/start#creating-the-main-widget

[Francielxyz]

@eduardoflorence Obrigado jovem não tinha reparado deste meu erro...Muito obrigado aqui funcionou perfeitamente