Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in /home/azsoluti/public_html/kimai.azsolutionspk.com/src/Event/CalendarDragAndDropSourceEvent.php:16 Stack trace: #0 {main} thrown in /home/azsoluti/public_html/kimai.azsolutionspk.com/src/Event/CalendarDragAndDropSourceEvent.php on line 16