Fatal error: Uncaught Error: Interface 'League\CommonMark\Extension\ConfigurableExtensionInterface' not found in /home/benjamincb/demos/acdg-site/vendor/league/commonmark/src/Extension/Mention/MentionExtension.php:23 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/league/commonmark/src/Extension/Mention/MentionExtension.php on line 23