Fatal error: Uncaught Error: Interface "League\CommonMark\Exception\CommonMarkException" not found in C:\svn\carga\vendor\league\commonmark\src\Extension\FrontMatter\Exception\InvalidFrontMatterException.php:18 Stack trace: #0 {main} thrown in C:\svn\carga\vendor\league\commonmark\src\Extension\FrontMatter\Exception\InvalidFrontMatterException.php on line 18