I am installing Flutter and everything is good exept one thing, specified above.
Flutter doctor says this:
$ flutter doctor -v
[√] Flutter (C
As mentioned in the message it is optional and only used for specific tasks.
You can install it from Android Studio
Menu > Tools > SDK Manager > Android SDK (left side of the dialog) > SDK Tools (tab)
Ensure that this line is enabled
With [OK] it should be installed.