Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Tests\Fixtures\GroupDummy' not found in C:\xampp\htdocs\ApiSigestWin\1.20.01.20.4\vendor\symfony\serializer\Tests\Fixtures\GroupDummyChild.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.20.01.20.4\vendor\symfony\serializer\Tests\Fixtures\GroupDummyChild.php on line 14