Fatal error: Uncaught Error: Class "Symfony\Component\Form\AbstractType" not found in /home/ntpcbgtpp/public_html/mat1/src/Form/Type/StructuralEntityType.php:45 Stack trace: #0 {main} thrown in /home/ntpcbgtpp/public_html/mat1/src/Form/Type/StructuralEntityType.php on line 45