Fatal error: Uncaught Error: Class "Symfony\Component\Form\AbstractTypeExtension" not found in /home/smagamf/chloe_garden/vendor/symfony/form/Tests/Fixtures/FooTypeBarExtension.php:17 Stack trace: #0 {main} thrown in /home/smagamf/chloe_garden/vendor/symfony/form/Tests/Fixtures/FooTypeBarExtension.php on line 17