Fatal error: Uncaught Error: Class "humhub\modules\content\widgets\richtext\extensions\link\RichTextLinkExtension" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/content/widgets/richtext/extensions/mentioning/MentioningExtension.php:23 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/content/widgets/richtext/extensions/mentioning/MentioningExtension.php on line 23