Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in D:\projects\php\laragon\www\blog-naver\vendor\symfony\mime\Header\MailboxHeader.php:22 Stack trace: #0 {main} thrown in D:\projects\php\laragon\www\blog-naver\vendor\symfony\mime\Header\MailboxHeader.php on line 22