Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Context\Normalizer\AbstractNormalizerContextBuilder' not found in /home/rykfgln/www/4.ta.a/vendor/symfony/serializer/Context/Normalizer/JsonSerializableNormalizerContextBuilder.php:19 Stack trace: #0 {main} thrown in /home/rykfgln/www/4.ta.a/vendor/symfony/serializer/Context/Normalizer/JsonSerializableNormalizerContextBuilder.php on line 19