C:\src\flutter>flutter

doctor

This command checks your environment and displays a report of the status
of your Flutter installation. Check the output carefully for other
software you might need to install or further tasks to perform
(shown in bold text).

For example:

The following sections describe how to perform these tasks and
finish the setup process. Once you have installed any missing
dependencies, you can run the flutter doctor command again to
verify that you’ve set everything up correctly.

Note:
  If flutter doctor returns that either the Flutter plugin
  or  Dart plugin of Android Studio are not installed, move
  on to Set up an editor to resolve this issue.

Warning:
  The Flutter tool may occasionally download resources from Google servers.
  By downloading or using the Flutter SDK you agree to the Google Terms of Service.