我在应用程序中看不到我的图片，而是看到一个带有X的红色框，上面写着Unable to load asset: images/aboutmaggie.png.
我创建了一个包含子目录images的目录assets，目录assets与目录pubspec.yaml处于同一级别。
我把图像放入images目录。当我在Android Studio中点击图像时，图像就会显示出来。

在pubspec.yaml中，我有这些行：

flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  assets:
    - assets/images/

我补充道

class AboutRoute extends StatelessWidget {
  const AboutRoute({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Kabbalistic Numerology'),
        ),
        body: ListView(
            shrinkWrap: true,
            padding: const EdgeInsets.all(8),
            children: <Widget>[
              RichText(
                text: TextSpan(
                  children: <TextSpan>[
                    TextSpan(
                        text: 'About Maggie McPherson',
                        style: TextStyle(
                          fontWeight: FontWeight.bold,
                          color: Colors.black,
                        )),
                  ],
                ),
                textAlign: TextAlign.center,
              ),
              RichText(
                text: TextSpan(
                  children: <TextSpan>[
                    TextSpan(
                        text:
                            "Dr. Leslie Margaret Perrin McPherson...",
                        style: TextStyle(
                          color: Colors.black,
                        )),
                  ],
                ),
              ),
              Image.asset('images/aboutmaggie.png'), // <--this image doesn't load
            ]));
  }
}

我运行了flutter pub get。我运行了工具〉Flutter〉Flutter Clean。我关闭并重新启动了Android Studio。
错误消息为：

======== Exception caught by image resource service ================================================
The following assertion was thrown resolving an image codec:
Unable to load asset: images/aboutmaggie.png

我尝试将另一个图像放入assets/images并调用它，但第二个图像也无法加载。
这张照片有什么问题吗？