Fatal error: Uncaught Error: Class "Symfony\Component\Form\AbstractExtension" not found in /home/astechc1/public_html/vendor/symfony/doctrine-bridge/Form/DoctrineOrmExtension.php:18 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/symfony/doctrine-bridge/Form/DoctrineOrmExtension.php on line 18