Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Encoder\ContextAwareEncoderInterface" not found in /home/zdpktgd/ptc/vendor.old/symfony/serializer/Encoder/ChainEncoder.php:26 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/serializer/Encoder/ChainEncoder.php on line 26