图像错误构建者无法在颤动中工作

Question

我正在尝试列出网络图像列表。它一直在工作，直到我重新安装颤音为止。 这是代码，我尝试了cachednetworkimage，并且都有相同的错误。

ListTile(
  title: Text(MyNetowrk.currentChannels[index].name),
    leading: ClipRRect(
      borderRadius: BorderRadius.circular(25.0),
      child: FadeInImage.assetNetwork(
        fit: BoxFit.fill,
        placeholder:'assets/images/page.png', //kTransparentImage,
        image: MyNetowrk.channels[index].icon,
        imageErrorBuilder: (context, url, error) =>
          SizedBox(width: 200, child: new Icon(Icons.error)),
     ),
   ),
),

这是我遇到的错误：

/D:/APPS/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-3.2.0/lib/src/image_provider/multi_image_stream_completer.dart:152:22: Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/D:/APPS/flutter/packages/flutter/lib/src/scheduler/binding.dart').
package:flutter/…/scheduler/binding.dart:1
    SchedulerBinding.instance?.scheduleFrameCallback(_handleAppFrame);
                     ^
/D:/APPS/flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-3.2.0/lib/src/image_provider/cached_network_image_provider.dart:109:29: Warning: Operand of null-aware operation '?.' has type 'PaintingBinding' which excludes null.

- 'PaintingBinding' is from 'package:flutter/src/painting/binding.dart' ('/D:/APPS/flutter/packages/flutter/lib/src/painting/binding.dart').
package:flutter/…/painting/binding.dart:1
      () => PaintingBinding.instance?.imageCache?.evict(key),

它打开_network_image_io.dart文件并显示第120行。