Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in /home3/kzgwfftb/public_html/vendor/symfony/mime/Header/DateHeader.php:19 Stack trace: #0 {main} thrown in /home3/kzgwfftb/public_html/vendor/symfony/mime/Header/DateHeader.php on line 19