Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand" not found in C:\xampp\htdocs\electronica\vendor\symfony\swiftmailer-bundle\Command\NewEmailCommand.php:27 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\symfony\swiftmailer-bundle\Command\NewEmailCommand.php on line 27