blank screen when the home contains DefaultTabController with nested Scaffold

[Mohamed-Reda1010]

// Splach screen code

@OverRide
Widget build(BuildContext context) {
SizeConfig().init(context);
return Scaffold(
body: DoubleBackToCloseApp(
snackBar: MySnackBar.exitSnackbar(),
child: const Body(),
));
}

Home Screen Code

@OverRide
Widget build(BuildContext context) {
return Scaffold(
body: const Body(),
bottomNavigationBar:
const CustomBottomNavBar(selectedMenu: MenuState.home),
);
}

// Body() class
@OverRide
Widget build(BuildContext context) {
loadPicFaster(context);
return DefaultTabController(
initialIndex: 1,
length: 2,
child: Scaffold(
appBar: AppBar(
title: myTabBar(),
toolbarHeight: getProportionateScreenHeight(80),
backgroundColor: appBarBgColor,
automaticallyImplyLeading: false,
// title: const Text('title'),
//bottom: myTabBar(),
),
body: const TabBarView(
children: [
CarsSearch(
bottomNavBarShow: false,
appbarShow: false,
adminPanel: false,
showSpecialAqarsOnly: true,
),
CarsSearch(
bottomNavBarShow: false,
appbarShow: false,
adminPanel: false,
),
],
),
),
);

}

the plugin working well when i remove the DefaultTabController , but keeping it the app not closing just showing blank white screen !!
any ideas ?