Fatal error: Uncaught Error: Interface "Symfony\Component\Mailer\Transport\TransportInterface" not found in C:\svn\conexerp\vendor\symfony\mailer\Transport\RoundRobinTransport.php:25 Stack trace: #0 {main} thrown in C:\svn\conexerp\vendor\symfony\mailer\Transport\RoundRobinTransport.php on line 25