Como sugiere la documentación , escribí este servicio para agregar el uuid al objeto normalizado:

 <?php namespace App\Serializer; use InvalidArgumentException; use Symfony\Component\Serializer\Normalizer\DenormalizerInterface; use Symfony\Component\Serializer\Normalizer\NormalizerInterface; use Symfony\Component\Serializer\SerializerAwareInterface; use Symfony\Component\Serializer\SerializerInterface; final class ApiNormalizer implements NormalizerInterface, DenormalizerInterface, SerializerAwareInterface { private DenormalizerInterface|NormalizerInterface $decorated; public function __construct(NormalizerInterface $decorated) { if (!$decorated instanceof DenormalizerInterface) { throw new InvalidArgumentException(sprintf('The decorated normalizer must implement the %s.', DenormalizerInterface::class)); } $this->decorated = $decorated; } public function supportsNormalization($data, $format = null) { return $this->decorated->supportsNormalization($data, $format); } public function normalize($object, $format = null, array $context = []) { $data = $this->decorated->normalize($object, $format, $context); if(method_exists($object, 'getUuid') && is_array($data)){ $data['uuid'] = $object->getUuid(); } return $data; } /** * @param mixed $data * @param string $type * @param null $format * * @return bool */ public function supportsDenormalization($data, $type, $format = null) { return $this->decorated->supportsDenormalization($data, $type, $format); } public function denormalize($data, $type, $format = null, array $context = []) { return $this->decorated->denormalize($data, $type, $format, $context); } public function setSerializer(SerializerInterface $serializer) { if($this->decorated instanceof SerializerAwareInterface) { $this->decorated->setSerializer($serializer); } } }

Y services.yaml

 App\Serializer\ApiNormalizer: # By default .inner is passed as argument decorates: 'api_platform.jsonld.normalizer.item'

Pero de repente (hasta ayer todo iba bien) me empieza a dar este error cuando ejecuto composer o cache clear

En CheckCircularReferencesPass.php línea 67: se detectó una referencia circular para el servicio "App\Serializer\ApiNormalizer", ruta: "App\Serializer\ApiNormalizer -> serializer -> App\Serializer\ApiNormalizer".