Fatal error: Uncaught Error: Interface 'League\CommonMark\Extension\HeadingPermalink\Slug\SlugGeneratorInterface' not found in D:\xampp7\htdocs\www\nbkm\show_sr\vendor\league\commonmark\src\Extension\HeadingPermalink\Slug\DefaultSlugGenerator.php:17 Stack trace: #0 {main} thrown in D:\xampp7\htdocs\www\nbkm\show_sr\vendor\league\commonmark\src\Extension\HeadingPermalink\Slug\DefaultSlugGenerator.php on line 17