Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in I:\www\picman\vendor\symfony\serializer\Debug\TraceableNormalizer.php:29 Stack trace: #0 {main} thrown in I:\www\picman\vendor\symfony\serializer\Debug\TraceableNormalizer.php on line 29