Could not find the correct Provider - Flutter

You need a builder bridge between ChangeNotifierProvider and Scaffold.

Provider package already has it's own builder called Consumer, you can use it like:

ChangeNotifierProvider<MySchedule>(          create: (context) => MySchedule(),          child: Consumer<MySchedule>(                  builder: (context, provider, child) => Scaffold(....,

Check this link: https://pub.dev/packages/provider#reading-a-value

edit: builder is now create.

According to the latest version of the Provider package, the builder() method of ChangeNotifierProvider was changed to create().So editing Esen Mehmet's version, this will work instead:

ChangeNotifierProvider(      create: (context) => MySchedule(),  //change builder to create      child: Consumer<MySchedule>(              builder: (context, provider, child) => Scaffold(....,

You can use provider as Below,class HomeApp extends StatefulWidget {  @override  State<StatefulWidget> createState() {    // TODO: implement createState   return HomeAppState();  }}class HomeAppState extends State<HomeApp>{  final _user = UserModel();  @override  Widget build(BuildContext context) {    return MultiProvider(        providers: [          ChangeNotifierProvider<LoginNotifier>(              create: (BuildContext context) {                return LoginNotifier();              }),          ChangeNotifierProvider<UserModel>.value(value: _user),        ],        child: MaterialApp(          debugShowCheckedModeBanner: false,          theme: Provider.of<ThemeModel>(context).currentTheme,          home: HomeScreen(),        ));  }}