Sorry, but you either have no stories or none are selected somehow.
If the problem persists, check the browser console, or the terminal you've run Storybook from.
@component-controls/editors is a collection of control editors part to enable to run-time editing of controls api properties.
addPropertyEditor, so you can replace or add new editors.getPropertyEditor factory.This package is installed as part of component-controls and you should never need to install it manually.