I’m developing a category page, I fetch category data from my backend service and then render the category list, it works well.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
but throw an Exception: flutter: Another exception was thrown: Incorrect use of ParentDataWidget.

Here is my flutter code:

import 'package:flutter/material.dart';
import 'package:talkie/model/category_data.dart';
import 'package:talkie/pages/home/home_search_bar.dart';
import '../../http/category_api.dart';

class CategoryPage2 extends StatefulWidget {
  const CategoryPage2({super.key});

  @override
  State<CategoryPage2> createState() => _CategoryPage2State();
}

class _CategoryPage2State extends State<CategoryPage2> {
  CategoryApi _categoryApi = CategoryApi();
  late List<CategoryData> _categories;

  @override
  void initState() {
    super.initState();
    fetchCategories();
  }

  Future<void> fetchCategories() async {
    try {
      final res = await _categoryApi.getCategories();
      setState(() {
        if (res == null) {
          _categories = [];
        } else {
          _categories = (res as List<dynamic>)
              .map((item) => CategoryData.fromJson(item))
              .toList();
        }
      });
    } catch (e) {
      print(e);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: HomeSearchBar(),
      ),
      body: Row(
        children: [
          Expanded(
            child: _buildCategries()
          ),
          // Expanded(child: _buildAlbums())
        ],
      ),
    );
  }

  Widget _buildCategries() {
    return ListView.builder(
        itemCount: _categories.length,
        itemBuilder: (context, index) {
          CategoryData categoryData = _categories[index];
          return ListTile(
            title: Text(categoryData.name!),
          );
        });
  }

  // Widget _buildAlbums() {
  //   return Text("albums");
  // }
}

It’s my code, please check and let me know WHY.