Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy' not found in /home/peverde/public_html/vendor/symfony/serializer/Tests/Fixtures/GroupDummyChild.php:14 Stack trace: #0 {main} thrown in /home/peverde/public_html/vendor/symfony/serializer/Tests/Fixtures/GroupDummyChild.php on line 14