The widgets inside the child scroll view doesn't scroll and throws bottom overflow exception on the screen when there are more widgets in that list view. I am not sure where I am doing a mistake.

```
home: Scaffold(
      body: Column(
          children: [
              APPbar(),
              Container(
                 color: Colors.grey[200],
                 child: Expanded(
                     child: Column(
                         children: [
                            searchBar(),
                            Row(children: casewidgets),
                         ], 
                     )
                 ),
              )

             SingleChildScrollView(
                child:Column(
                   children: [
                       Text("a new column"),
                       Text("a new column"),
                       Text("a new column"),
                       Text("a new column"),
                   ],
               )
             ),
        ]
)),

```