Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Exception\ExceptionInterface' not found in /home/devmecseminars/public_html/mec/vendor/symfony/serializer/Exception/BadMethodCallException.php:14 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/serializer/Exception/BadMethodCallException.php on line 14