Fatal error: Uncaught Error: Class "League\CommonMark\Event\AbstractEvent" not found in /home/alkhalaffamily/public_html/educourses/vendor/league/commonmark/src/Event/DocumentParsedEvent.php:19 Stack trace: #0 {main} thrown in /home/alkhalaffamily/public_html/educourses/vendor/league/commonmark/src/Event/DocumentParsedEvent.php on line 19