Flutter Web SingleChildScrollView Incorrect use of ParentDataWidget - flutter

Question

This is how my code looks like, and to make it work correctly in web i have to do one part scrollable because of adapty.
Scaffold(
body: Row(
children: [
Column(
children: [
Expanded(
child: Container(
width: 200,
color: Colors.blue,
),
)
],
),
Expanded(
child: Column(
children: [
Row(
children: [
Expanded(
child: Container(
height: 108,
color: AppColors.bg.secondary,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
const Padding(
padding: EdgeInsets.only(left: 40),
child: Text(
'Contacts',
style: TextStyle(
fontSize: 40,
color: Colors.black,
),
),
),
Padding(
padding: const EdgeInsets.only(right: 40),
child: InkWell(
onTap: () {},
child: Container(
decoration: BoxDecoration(borderRadius: BorderRadius.circular(20), color: AppColors.bg.fields),
child: const Padding(
padding: EdgeInsets.symmetric(horizontal: 77, vertical: 8),
child: Text('Save changes'),
),
),
),
)
],
),
),
),
],
),
Expanded(
child: SingleChildScrollView(
child: WidgetsContainer(
createNewManager: model.createNewManager,
managers: model.managers,
)),
)
],
),
),
],
),
);
You may see that i use Expanded widget to make SingleChildeScrollView fill all free space
and this is error
Incorrect use of ParentDataWidget.
The ParentDataWidget Expanded(flex: 1) wants to apply ParentData of type FlexParentData to a
RenderObject, which has been set up to accept ParentData of incompatible type ParentData.
Usually, this means that the Expanded widget has the wrong ancestor RenderObjectWidget. Typically,
Expanded widgets are placed directly inside Flex widgets.
The offending Expanded is currently placed inside a _SingleChildViewport widget.
The ownership chain for the RenderObject that received the incompatible parent data was:
RepaintBoundary ← NotificationListener<ScrollNotification> ←
NotificationListener<ScrollMetricsNotification> ← _MaterialScrollbar ← Scrollbar ← Scrollable ←
SingleChildScrollView ← Expanded ← ShimmerWaiting ← FutureBuilder<dynamic> ← ⋯
this is how my screen looks like
also this is what futureBuilder in class WidgetsContainer returns me
Column(
children: [ManagerContainer(createNewManager: createNewManager), ServicesContainer()],
);