Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\DenormalizerInterface" not found in /home/astechc1/public_html/vendor/friendsofsymfony/jsrouting-bundle/Serializer/Denormalizer/RouteCollectionDenormalizer.php:18 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/friendsofsymfony/jsrouting-bundle/Serializer/Denormalizer/RouteCollectionDenormalizer.php on line 18