Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in /home/irishdeedsindex/public_html/blog/concrete/src/File/Event/ThumbnailGenerate.php:7 Stack trace: #0 {main} thrown in /home/irishdeedsindex/public_html/blog/concrete/src/File/Event/ThumbnailGenerate.php on line 7