Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Encoder\EncoderInterface" not found in /home/amper418/shopv2.amperio.ch/vendor/symfony/serializer/Encoder/JsonEncode.php:21 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/symfony/serializer/Encoder/JsonEncode.php on line 21