报错信息

Compiler message:
../../../.pub-cache/hosted/pub.flutter-io.cn/cached_network_image-1.1.3/lib/src/cached_network_image_provider.dart:42:24: Error: The method 'CachedNetworkImageProvider.load' has fewer positional arguments than those of overridden method 'ImageProvider.load'.
  ImageStreamCompleter load(CachedNetworkImageProvider key) {
                       ^
../../software/flutter/packages/flutter/lib/src/painting/image_provider.dart:403:24: Context: This is the overridden method ('load').
  ImageStreamCompleter load(T key, DecoderCallback decode);
                       ^
Exception: Errors during snapshot creation: null

解决方案

将cached_network_image的版本号升级到2.0.0-rc

cached_network_image: ^2.0.0-rc

如下是官方声明: