Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in /home/technoon/public_html/demo/yondy/vendor/symfony/serializer/Normalizer/ProblemNormalizer.php:25 Stack trace: #0 {main} thrown in /home/technoon/public_html/demo/yondy/vendor/symfony/serializer/Normalizer/ProblemNormalizer.php on line 25