dart plugin not installed code example

Example 1: [!] Android Studio (version 4.1.0) X Flutter plugin not installed; this adds Flutter specific functionality. X Dart plugin not installed; this adds Dart specific functionality.

flutter channel dev
flutter channel upgrade

Example 2: Flutter plugin not installed; this adds Flutter specific functionality

ln -s ~/Library/Application\ Support/Google/AndroidStudio4.1/plugins ~/Library/Application\ Support/AndroidStudio4.1