Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Context\Normalizer\AbstractNormalizerContextBuilder" not found in I:\www\picman\vendor\symfony\serializer\Context\Normalizer\JsonSerializableNormalizerContextBuilder.php:19 Stack trace: #0 {main} thrown in I:\www\picman\vendor\symfony\serializer\Context\Normalizer\JsonSerializableNormalizerContextBuilder.php on line 19