Flutter错误：“ScrollController未附加到任何滚动视图。”在滚动上

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('ScrollController Example')),
        body: MyScrollableWidget(),
      ),
    );
  }
}

class MyScrollableWidget extends StatefulWidget {
  @override
  _MyScrollableWidgetState createState() => _MyScrollableWidgetState();
}

class _MyScrollableWidgetState extends State<MyScrollableWidget> {
  ScrollController _scrollController = ScrollController();

  @override
  void dispose() {
    _scrollController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    List<String> items = List.generate(100, (index) => 'Item $index');

    return ListView.builder(
      controller: _scrollController,
      itemCount: items.length,
      itemBuilder: (context, index) {
        return ListTile(title: Text(items[index]));
      },
    );
  }
}