Fatal error: Uncaught Error: Class "League\CommonMark\MarkdownConverter" not found in /opt/lampp/htdocs/forum/flarum/vendor/league/commonmark/src/GithubFlavoredMarkdownConverter.php:23 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/league/commonmark/src/GithubFlavoredMarkdownConverter.php on line 23