Fatal error: Uncaught Error: Class "s9e\SweetDOM\Document" not found in /opt/lampp/htdocs/forum/flarum/vendor/s9e/text-formatter/src/Utils/ParsedDOM/Document.php:17 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/s9e/text-formatter/src/Utils/ParsedDOM/Document.php on line 17