Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\UnstructuredHeader" not found in C:\laragon\htdocs\eloboost24\vendor\spatie\mailcoach-mailer\src\Headers\TransactionalMailHeader.php:7 Stack trace: #0 {main} thrown in C:\laragon\htdocs\eloboost24\vendor\spatie\mailcoach-mailer\src\Headers\TransactionalMailHeader.php on line 7