Fatal error: Uncaught Error: Interface "Symfony\Component\Form\DataTransformerInterface" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\doctrine-bridge\Form\DataTransformer\CollectionToArrayTransformer.php:22 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\doctrine-bridge\Form\DataTransformer\CollectionToArrayTransformer.php on line 22