Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Envelope" not found in /Users/m4_production_1/Sites/ipt/iptkids/vendor/symfony/mailer/DelayedEnvelope.php:24 Stack trace: #0 {main} thrown in /Users/m4_production_1/Sites/ipt/iptkids/vendor/symfony/mailer/DelayedEnvelope.php on line 24