求助：Flutter中Widget无法赋值给InheritedWidget类型变量错误

我并非Flutter开发者，在构建项目时遇到以下错误：

错误信息：

/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_gauges-19.4.56/lib/src/linear_gauge/gauge/linear_gauge_scope.dart:40:10: Error: A value of type 'Widget' can't be assigned to a variable of type 'InheritedWidget'.
 - 'Widget' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
 - 'InheritedWidget' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
        .widget;
         ^


FAILURE: Build failed with an exception.

* Where:
Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1159

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutter\bin\flutter.bat'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 26s
Exception: Gradle task assembleDebug failed with exit code 1

错误原因 #

你使用的syncfusion_flutter_gauges版本（19.4.56）过旧，与当前Flutter版本不兼容。旧版本包在获取InheritedWidget时未做类型转换，而新版本Flutter中相关API返回类型调整为Widget，导致类型不匹配。

解决步骤 #

• 打开项目根目录下的pubspec.yaml文件，找到syncfusion_flutter_gauges依赖项，将版本号更新为最新兼容版本（例如^25.1.35，可根据官方最新版本调整）
• 在项目根目录打开终端，执行以下命令清理缓存并重新拉取依赖：

  flutter clean
  flutter pub get
  

• 重新执行构建命令：

  flutter run
  

内容的提问来源于stack exchange，提问作者Md Siyam