在我的flutter專案中，我對插件做了一些更新，然后使用了flutter upgrade。之后，每當我運行我的顫振專案時，它都會顯示以下錯誤-
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/platform-3.0.2/lib/src/interface/local_platform.dart:46:19: Error: Member not found: 'packageRoot'.
io.Platform.packageRoot; // ignore: deprecated_member_use
^^^^^^^^^^^ FAILURE: Build failed with an exception.
* Where: Script 'C:\src\flutter\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1102
* What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutter\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 20s Exception: Gradle task assembleDebug failed with exit code 1
所以，我需要一個建議，我該如何解決這個問題？
uj5u.com熱心網友回復：
首先運行這個命令
flutter clean
flutter pub get
如果它不起作用，請嘗試清除該包并再次運行命令
uj5u.com熱心網友回復：
對我來說，清潔和獲取包裹不起作用。這個錯誤是在我升級 flutter 后開始的。我在主頻道上，對我來說一個快速的解決方法是切換到穩定版。
flutter channel stable
flutter upgrade
也許有一個更好的解決方案可以直接處理平臺包。
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