Flutter Android Launcher，应用程序无法显示容器是否有旋转木马

dependencies:
  flutter:
    sdk: flutter
  carousel_slider: ^4.0.0

import 'package:flutter/material.dart';
import 'package:carousel_slider/carousel_slider.dart';

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

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

class CarouselExample extends StatelessWidget {
  final List<String> imgList = [
    'https://example.com/image1.jpg',
    'https://example.com/image2.jpg',
    'https://example.com/image3.jpg',
  ];

  @override
  Widget build(BuildContext context) {
    return CarouselSlider(
      options: CarouselOptions(
        height: 400.0,
        enlargeCenterPage: true,
        autoPlay: true,
        aspectRatio: 16 / 9,
        autoPlayCurve: Curves.fastOutSlowIn,
        enableInfiniteScroll: true,
        autoPlayAnimationDuration: Duration(milliseconds: 800),
        viewportFraction: 0.8,
      ),
      items: imgList.map((item) {
        return Container(
          child: Center(
            child: Image.network(item, fit: BoxFit.cover),
          ),
        );
      }).toList(),
    );
  }
}

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

<uses-permission android:name="android.permission.INTERNET"/>