Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Mapping\Loader\LoaderInterface' not found in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Mapping\Loader\LoaderChain.php:28 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Mapping\Loader\LoaderChain.php on line 28