Flutter 颤振错误图像：无法加载资源

我试着让Flatter酒吧得到，尝试了几种方法来添加图像

我的名字叫yaml

flutter:
uses-material-design: true
assets:  
- assets/images/

main.dart中的特殊代码

     decoration: new BoxDecoration(        
                image: DecorationImage(
                image: AssetImage('assets/images/thermo.png'),
                fit: BoxFit.fill,
                ),
                color: Color.fromRGBO(78, 144, 30, 1),                         
                borderRadius: new BorderRadius.only(
                topLeft: const Radius.circular(30.0),
                topRight: const Radius.circular(30.0),
                bottomLeft: const Radius.circular(30.0),
                bottomRight: const Radius.circular(30.0),
              )        
            ),  

调试控制台

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

When the exception was thrown, this was the stack
#0      PlatformAssetBundle.load
package:flutter/…/services/asset_bundle.dart:225
<asynchronous suspension>
#1      AssetBundleImageProvider._loadAsync
package:flutter/…/painting/image_provider.dart:668
#2      AssetBundleImageProvider.load
package:flutter/…/painting/image_provider.dart:651

════════ 图像资源服务捕获到异常════════════════════════════
解析图像编解码器时引发了以下断言：
无法加载资源：assets/images/thermo.png
当抛出异常时，这是堆栈
#0平台组装绑定。加载
套餐：颤振/../services/asset_bundle.省道：225
缩进（空格）在pubspec.yaml文件中非常重要。你的问题与此有关。您可以这样修复它：

flutter:
  uses-material-design: true
  assets:  
    - assets/images/

YAML对空格敏感。检查你的缩进。谢谢！现在工作