Fatal error: Uncaught Error: Class "Vich\UploaderBundle\Handler\AbstractHandler" not found in /home/astechc1/public_html/vendor/vich/uploader-bundle/src/Handler/UploadHandler.php:21 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/vich/uploader-bundle/src/Handler/UploadHandler.php on line 21