Fatal error: Uncaught Error: Class "Symfony\Component\PropertyAccess\PropertyPath" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\form\Extension\Validator\ViolationMapper\RelativePath.php:20 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\form\Extension\Validator\ViolationMapper\RelativePath.php on line 20