Fatal error: Uncaught Error: Class 'League\CommonMark\Event\AbstractEvent' not found in C:\Apache24\htdocs\vendor.old2\league\commonmark\src\Event\DocumentPreRenderEvent.php:21 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old2\league\commonmark\src\Event\DocumentPreRenderEvent.php on line 21