Flutter Outline Shows “Nothing to show” in android studio

I am trying to Extract Widget via Flutter Outline But I am facing below problem in android studio.

Flutter Outline Shows "Nothing to show"

See in this picture:

After running "flutter doctor -v" Shows:

Please help me if you know how to over come from this problem?

Solution to answer:

Move the mouse to any widget and Press Ctrl (or ⌘ command on macOS) and click on that widget.

After this step, your Flutter Outline will be enabled and showing widget tree