Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\SerializerInterface" not found in /home/raceyr5/sites/crm2.lassensit.dev/vendor/symfony/serializer/Serializer.php:49 Stack trace: #0 {main} thrown in /home/raceyr5/sites/crm2.lassensit.dev/vendor/symfony/serializer/Serializer.php on line 49