我遇到了一些奇怪的颤振错误，所以我用谷歌搜索它们，并被告知升级颤振似乎没有帮助。我没有触及任何这些文件，这是一个错误吗？不久前它运行良好。我试过颤振清洁、颤振升级、颤振医生和颤振酒吧缓存修复这是颤振医生：
[?] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[?] Android Studio (version 3.6)
[!] IntelliJ IDEA Ultimate Edition (version 2019.2)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[?] VS Code (version 1.42.1)
[?] Connected device (1 available)
! Doctor found issues in 1 category.
Compiler message:
../flutter/.pub-cache/hosted/pub.dartlang.org/flushbar-1.9.1/lib/flushbar_route.dart:273:8: Error: The method 'FlushbarRoute.install' has more required arguments than those of overridden method 'OverlayRoute.install'.
void …