Fatal error: Uncaught Error: Class 'League\CommonMark\Inline\Element\AbstractInline' not found in /var/www/html/fuel/vendor/league/commonmark/src/Extension/HeadingPermalink/HeadingPermalink.php:19 Stack trace: #0 {main} thrown in /var/www/html/fuel/vendor/league/commonmark/src/Extension/HeadingPermalink/HeadingPermalink.php on line 19