Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Tests\Fixtures\TraversableDummy' not found in /home/peverde/public_html/vendor/symfony/serializer/Tests/Fixtures/NormalizableTraversableDummy.php:19 Stack trace: #0 {main} thrown in /home/peverde/public_html/vendor/symfony/serializer/Tests/Fixtures/NormalizableTraversableDummy.php on line 19