Here is the flutter doctor
result:
[√] Flutter (Channel stable, 1.22.1, on Microsoft Windows [Version 10.0.18362.30], locale en-US)
[√] Android t
open terminal: Mac User: flutter config --android-studio-dir=/Applications/Android\ Studio.app
Since you say you have flutter plugin installed in Android Studio, and if Android Studio correctly shows your installed plugin, there is no reason to believe any third-party tool reporting otherwise.
Also, this will not affect your flutter development and your IDE plugins will work as expected inside the IDE and flutter tool's commands work independent of the IDE in use.
Android Studio 4.1 apparently changed its default plugin install path.
Related github issue: [flutter_tools] IDE plugin validators should be deprecated #61246
Flutter does not directly use the IDE plugins, so doctor failing to detect them does not affect any behavior (it's just annoying).
If you are upgrading for an existing project:
Run
git clone https://github.com/flutter/flutter.git
in your terminal.
The be sure to delete the Flutter folder in your App's root directory. Otherwise you will get over 50k errors popping up
change channel master to dev. then upgrade.
flutter channel dev
flutter channel upgrade
try again
flutter doctor
Note: I think it's Android Studio 4.1 issue...
Are you using Android Studio V 4.1? With Android Studio V4.1 there is a problem. Try to reinstall Android Studio but Version 4.0.1 and try it again, chances are this will fix your problem.