Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Mapping\Loader\LoaderInterface" not found in /home/nmuffmat/site-heliconia/vendor/symfony/serializer/Mapping/Loader/AnnotationLoader.php:34 Stack trace: #0 {main} thrown in /home/nmuffmat/site-heliconia/vendor/symfony/serializer/Mapping/Loader/AnnotationLoader.php on line 34