Fatal error: Uncaught Error: Class "Symfony\Component\Form\ChoiceList\Loader\AbstractChoiceLoader" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\doctrine-bridge\Form\ChoiceList\DoctrineChoiceLoader.php:22 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\doctrine-bridge\Form\ChoiceList\DoctrineChoiceLoader.php on line 22