Fatal error: Uncaught Error: Interface 'League\CommonMark\Extension\ExtensionInterface' not found in /mnt/volume_lon1_01/backend/admin/vendor/league/commonmark/src/Extension/ExternalLink/ExternalLinkExtension.php:18 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/league/commonmark/src/Extension/ExternalLink/ExternalLinkExtension.php on line 18