Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in /home/alkhalaffamily/public_html/frcem_/vendor/symfony/mime/Header/MailboxListHeader.php:22
Stack trace:
#0 {main}
thrown in /home/alkhalaffamily/public_html/frcem_/vendor/symfony/mime/Header/MailboxListHeader.php on line 22