Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Envelope" not found in /home/solecbe1/public_html/sms.solecbe.com/vendor/composer/d81e1bb7/symfony-mailer-4ff41a7/DelayedEnvelope.php:24 Stack trace: #0 {main} thrown in /home/solecbe1/public_html/sms.solecbe.com/vendor/composer/d81e1bb7/symfony-mailer-4ff41a7/DelayedEnvelope.php on line 24