Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Header\AbstractHeader' not found in /home/admin2bannerworl/public_html/admin2.bannerworld.co.uk/vendor-old/symfony/mime/Header/DateHeader.php:19 Stack trace: #0 {main} thrown in /home/admin2bannerworl/public_html/admin2.bannerworld.co.uk/vendor-old/symfony/mime/Header/DateHeader.php on line 19