I am trying to run flutter app but the appbar and the search button is not visible on the screen and anything added under the TPrimaryHeaderContainerWidget isnt visible though the TPrimaryHeaderContainerWidget is visible kindly help

this is the code for home.dart

class HomeScreen extends StatelessWidget {
  const HomeScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
        body: SingleChildScrollView(
            child: Column(
      children: [
        TPrimaryHeaderContainer(
            child: Column(
          children: [
            THomeBar(),
             SizedBox(height: TSizes.spaceBtwSections),

          ],
        ))
      ],
    )));
  }
}

this is the TPrimaryHeader class

class TPrimaryHeaderContainer extends StatelessWidget {
  const TPrimaryHeaderContainer({
    super.key, required this.child,
  });

  final Widget? child;

  @override
  Widget build(BuildContext context) {
    return TCurvedEdgeWidget(
      child:Container(
          color:TColors.primary,
          padding: const EdgeInsets.all(0),
          child:SizedBox(
            height:400,
            child: Stack(
              children: [
                Positioned(top:-150, right: -250, child: TCircularWidget(background: TColors.textWhite.withOpacity(0.1),)),
                Positioned(top:100, right: -300, child: TCircularWidget(background: TColors.textWhite.withOpacity(0.1),))
              ],
            ),
          )
      ),
    );
  }
}```

this is the homebar class
``` class HomeScreen extends StatelessWidget {
  const HomeScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
        body: SingleChildScrollView(
            child: Column(
      children: [
        TPrimaryHeaderContainer(
            child: Column(
          children: [
            THomeBar(),
             SizedBox(height: TSizes.spaceBtwSections),

          ],
        ))
      ],
    )));
  }
}