Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Header\AbstractHeader" not found in /home1/aihika/public_html/internal-software/vendor/symfony/mime/Header/PathHeader.php:22 Stack trace: #0 {main} thrown in /home1/aihika/public_html/internal-software/vendor/symfony/mime/Header/PathHeader.php on line 22