Fatal error: Uncaught Error: Interface 'League\CommonMark\Extension\HeadingPermalink\Slug\SlugGeneratorInterface' not found in D:\svn\epic-site(사전예약)\default\vendor\league\commonmark\src\Extension\HeadingPermalink\Slug\DefaultSlugGenerator.php:23 Stack trace: #0 {main} thrown in D:\svn\epic-site(사전예약)\default\vendor\league\commonmark\src\Extension\HeadingPermalink\Slug\DefaultSlugGenerator.php on line 23