Fatal error: Uncaught Error: Interface "League\CommonMark\Extension\ExtensionInterface" not found in /srv/www/sites/public/starter-projects/vendor/league/commonmark/src/Extension/ConfigurableExtensionInterface.php:18 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-projects/vendor/league/commonmark/src/Extension/ConfigurableExtensionInterface.php on line 18