Flutter 参数类型MaterialApp Function()不能分配给参数类型Widget Function(BuildContext)

我用flutter_screenutil和

错误:无法将参数类型"MaterialApp Function()"分配给参数类型"Widget Function(BuildContext)".

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
    ]);
    return MultiProvider(
      providers: [
        ChangeNotifierProvider(
          create: (_) {
            return themeChanger;
          },
        ),
        ChangeNotifierProvider(
          create: (_) {
            return settingChanger;
          },
        ),
        ChangeNotifierProvider(create: (_) {
          return locationChanger;
        })
      ],
      child: Consumer2<DarkThemeProvider, AdvancedSettingsProvider>(
          builder: (context, value1, value2, child) {
        return
            ScreenUtilInit(
                designSize: Size(1080, 2160),
            builder: () =>
            MaterialApp(
          builder: (context, widget) {
            ScreenUtil.setContext(context);
            return MediaQuery(
                data: MediaQuery.of(context).copyWith(textScaleFactor: 1),
                child: widget!);
          },
          theme: Styles.themeData(
              themeChanger.darkTheme, context, themeChanger.color),
          debugShowCheckedModeBanner: false,
          home: (widget.payload.isEmpty)
              ? Skeleton()
 [enter image description here][1]             : AccessedByNotifPage(
                  payload: widget.payload,
                ),
          ),
        );
      }),
    );
  }
}

此图显示了错误: