[Flutter] Flutter Bloc; 1 positional argument(s) expected, but 0 found

Flutter Version: 2.1.0

Flutter Bloc Version: ^7.0.1

Dart: 2.13.0

Getting this error: 1 positional argument(s) expected, but 0 found. Try adding the missing arguments.dart(not_enough_positional_arguments).

Is there anything I'm wrong



My Sidebar Layout Where the error occured:

body: BlocProvider<NavigationBloc>(
create: (context) => NavigationBloc(),
child: Stack(
children: [
BlocBuilder<NavigationBloc, NavigationStates>(
builder: (context, NavigationState) {
return NavigationState as Widget;
}),
SideBar(),
],
),
),



My Bloc Navigation file:


import '/Pages/DeviceLocation/DeviceLocation.dart';

import '/Pages/Devices/DeviceLanding.dart';

import '../../LandingScreen/components/body.dart';
import '../../SensorScreen/charts/GasChart.dart';
import '../../SensorScreen/charts/HumChart.dart';
import '../../SensorScreen/charts/MoisChart.dart';
import '../../SensorScreen/charts/NurChart.dart';
import '../../SensorScreen/charts/PhChart.dart';
import '../../SensorScreen/charts/TemChart.dart';
import '../../SensorScreen/charts/chartComponents/NurCard.dart';
import 'package:bloc/bloc.dart';

enum NavigationEvents {
// DashboardClickEvent,
LandingScreenBodyClickEvent,
TemChartClickEvent,
HumChartClickEvent,
MoisChartClickEvent,
PhChartClickEvent,
NurChartClickEvent,
GasChartClickEvent,
DevicesClickEvent,
DevicesLocationClickEvent,
AccountClickEvent,
SettingsClickEvent
}

abstract class NavigationStates {}

class NavigationBloc extends Bloc<NavigationEvents, NavigationStates> {
NavigationBloc(NavigationStates initialState) : super(initialState);

@override
NavigationStates get initialState => LandingScreenBody();

@override
Stream<NavigationStates> mapEventToState(NavigationEvents event) async* {
switch (event) {
case NavigationEvents.LandingScreenBodyClickEvent:
yield LandingScreenBody();
break;
case NavigationEvents.TemChartClickEvent:
yield TemChart();
break;
case NavigationEvents.HumChartClickEvent:
yield HumChart();
break;
case NavigationEvents.MoisChartClickEvent:
yield MoisChart();
break;
case NavigationEvents.PhChartClickEvent:
yield PhChart();
break;
case NavigationEvents.NurChartClickEvent:
yield NurChart();
break;
case NavigationEvents.GasChartClickEvent:
yield GasChart();
break;
case NavigationEvents.DevicesClickEvent:
yield DeviceLanding();
break;
case NavigationEvents.DevicesLocationClickEvent:
yield DevicesLocation();
break;
}
}
}



What am I doing wrog?

Continue reading...