Not Showing Data from Api In DataTable – Flutter

hi i have json like this:

"data": {
        "list_item": [
            {
                "item": "1",
                "item_date": "1669189813143566825",
                "item_id": "0",
                "item_info": {},"
                "item_status":"on",
                    }]}

this class with sample table worked for me!but my table in app used paginated table and not worked in.

class TableSamleNew extends StatefulWidget {
  const TableSamleNew({Key? key}) : super(key: key);

  @override
  State<TableSamleNew> createState() => _TableSamleNewState();
}

class _TableSamleNewState extends State<TableSamleNew> {
  final getListController = Get.put(GetListController());
  late List<ListItem>? listItem=getListController.getListClient!.data!.listItem;

@override
Widget build(BuildContext context) {

return Scaffold(
  body: GetBuilder<GetListController>(
      builder: (_) => getListController.isLoading
          ? const Padding(
        padding: EdgeInsets.only(top:50),
        child: Center(child: CircularProgressIndicator()),
      ): DataTable(columns: [
      DataColumn(label: Text("1")),
      DataColumn(label: Text("1")),
      DataColumn(label: Text("1")),
      DataColumn(label: Text("1")),
      DataColumn(label: Text("1"))
    ],rows: listItem!.map<DataRow>((e) => DataRow(cells: [
      DataCell(Text(e.itemInfo!.clientMobile.toString())),
      DataCell(Text(e.itemId.toString())),
      DataCell(Text(e.itemId.toString())),
      DataCell(Text("")),
      DataCell(Text("")),
    ])).toList()),
  ),
);

}
}

this is my main table and not showing data..
table with paginated and sort data and search with one field in table but output showing me null

     class DataTableWithSortTest extends StatefulWidget {
  const DataTableWithSortTest({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  State<DataTableWithSortTest> createState() => _DataTableWithSortTestState();
}

class _DataTableWithSortTestState extends State<DataTableWithSortTest> {
  final getListController = Get.put(GetListController());
  late List<ListItem>? listItem=getListController.getListClient!.data!.listItem;
  bool sort = true;
  onsortColum(int columnIndex, bool ascending) {
    if (columnIndex == 0) {
      if (ascending) {
        listItem!.sort((a, b) => a.itemStatus!.compareTo(b.itemStatus!));
      } else {
        listItem!.sort((a, b) => b.itemStatus!.compareTo(a.itemStatus!));
      }
    }
  }

  @override
  void initState() {

    listItem = listItem!.cast<ListItem>();
    super.initState();
  }

  TextEditingController controller = TextEditingController();

  @override
  Widget build(BuildContext context) {
    print(listItem);

    return Directionality(
      textDirection: TextDirection.rtl,
      child: Scaffold(

          body: SingleChildScrollView(
            child: Container(
              padding: const EdgeInsets.all(8.0),
              decoration: BoxDecoration(
                color: Theme.of(context).canvasColor,
                borderRadius: const BorderRadius.all(Radius.circular(10)),
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  SizedBox(
                      width: double.infinity,
                      child: Theme(
                        data: ThemeData.light()
                            .copyWith(cardColor: Theme.of(context).canvasColor),
                        child: PaginatedDataTable(
                          sortColumnIndex: 0,
                          sortAscending: sort,
                          header: Container(
                            padding: const EdgeInsets.all(5),
                            decoration: BoxDecoration(
                                border: Border.all(
                                  color: Colors.grey,
                                ),
                                borderRadius: BorderRadius.circular(12)),
                            child: TextField(
                              controller: controller,
                              decoration: const InputDecoration(
                                  hintText: "search with name"),
                              onChanged: (value) {
                                setState(() {
                                  listItem = listItem!
                                      .where((element) =>
                                      element.itemStatus!.contains(value))
                                      .toList();
                                });
                              },
                            ),
                          ),
                          source: RowSource(
                            listItem: listItem,
                            count: listItem?.length,
                          ),

                          rowsPerPage: 5,
                          columnSpacing: 5,
                          columns: [
                            DataColumn(
                                label: const Text(
                                  "1",
                                  style: TextStyle(
                                      fontWeight: FontWeight.w600, fontSize: 14),
                                ),
                                onSort: (columnIndex, ascending) {
                                  setState(() {
                                    sort = !sort;
                                  });

                                //  onsortColum(columnIndex, ascending);
                                }),
                            const DataColumn(//
                              label: Text(
                                "2",
                                style: TextStyle(
                                    fontWeight: FontWeight.w600, fontSize: 14),
                              ),
                            ),
                            const DataColumn(
                              label: Text(
                                "3",
                                style: TextStyle(
                                    fontWeight: FontWeight.w600, fontSize: 14),
                              ),
                            ),
                            const DataColumn(
                              label: Text(
                                "4",
                                style: TextStyle(
                                    fontWeight: FontWeight.w600, fontSize: 14),
                              ),
                            ),
                            const DataColumn(
                              label: Text(
                                "5",
                                style: TextStyle(
                                    fontWeight: FontWeight.w600, fontSize: 14),
                              ),
                            ),


                          ],

                        ),
                      )),
                  const SizedBox(height: 20),

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

class RowSource extends DataTableSource {


  var listItem;
  final count;
  RowSource({
    required this.listItem,
    required this.count,
  });

  @override
  DataRow? getRow(int index) {
    if (index < rowCount) {
      return recentFileDataRow(listItem![index]);
    } else
      return null;
  }

  @override
  bool get isRowCountApproximate => false;

  @override
  int get rowCount => count;

  @override
  int get selectedRowCount => 0;

}

DataRow recentFileDataRow(var listItem) {


  return const DataRow(


    cells: [
      DataCell(Text("")),
      DataCell(Text("")),
      DataCell(Text("")),
      DataCell(Text("")),
      DataCell(Text("")),


    ],
  );
}