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.
This library is part of SliceMachine, a tool for component-based approach on both the front-end and the back-end.
The easiest way to get started is by following the Getting started here but if you're more of an adventurer, create a fresh Nuxt project and run this command in your CLI:
$> npx prismic-cli sm --setup