Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Encoder\DecoderInterface' not found in /home/pynchc/public_html/DEV/Old/concrete/vendor/symfony/serializer/Encoder/ChainDecoder.php:25 Stack trace: #0 {main} thrown in /home/pynchc/public_html/DEV/Old/concrete/vendor/symfony/serializer/Encoder/ChainDecoder.php on line 25