Fatal error: Uncaught Error: Interface 'League\CommonMark\Renderer\NodeRendererInterface' not found in D:\xampp\htdocs\jconf\ck\vendor\league\commonmark\src\Extension\HeadingPermalink\HeadingPermalinkRenderer.php:27 Stack trace: #0 {main} thrown in D:\xampp\htdocs\jconf\ck\vendor\league\commonmark\src\Extension\HeadingPermalink\HeadingPermalinkRenderer.php on line 27