Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Envelope" not found in /home/u336811718/domains/training.sothik.com/public_html/vendor/symfony/mailer/DelayedEnvelope.php:24 Stack trace: #0 {main} thrown in /home/u336811718/domains/training.sothik.com/public_html/vendor/symfony/mailer/DelayedEnvelope.php on line 24