Fatal error: Uncaught Error: Interface 'Michelf\MarkdownInterface' not found in /home/sven/www/svenk.org/~koeppel/src/lib/Markdown/Markdown.php:20 Stack trace: #0 {main} thrown in /home/sven/www/svenk.org/~koeppel/src/lib/Markdown/Markdown.php on line 20