The Twig Gesso StarterKit for Drupal is meant to be used in conjunction with the Gesso Drupal theme for projects in Pattern Lab.
In addition to the Gesso theme, The Twig Gesso StarterKit for Drupal requires the following:
pattern-lab/edition-php-drupal-standard: GitHub
This StarterKit can be installed by selecting during Pattern Lab install on the starter kit selection screen or via the following command:
php core/console --starterkit --install forumone/starterkit-twig-drupal-gesso