Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in /home/astechc1/public_html/vendor/friendsofsymfony/jsrouting-bundle/Serializer/Normalizer/RoutesResponseNormalizer.php:20 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/friendsofsymfony/jsrouting-bundle/Serializer/Normalizer/RoutesResponseNormalizer.php on line 20