Update to Android Studio 4.1 ,flutter plugin and dart plugin not Installed
I solve this problem like this
Only for MacOS
$ ln -s ~/Library/Application\ Support/Google/AndroidStudio4.1/plugins ~/Library/Application\ Support/AndroidStudio4.1
Switch from Flutter 1.22.2 channel stable to channel dev and you're good to go.
Copy and paste this in your cmd:
flutter channel devflutter upgrade
It is a flutter issue on 1.22 version, and happens after upgrading to Android Studio 4.1. It was already fixed on 1.23 version (dev channel). You can continue to run and work on your projects normally until this fix isn't ported to stable channel, or you can swith to dev channel and call flutter upgrade.