Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\AbstractExtension" not found in D:\htdocs\SuiteCRM\core\backend\DependecyInjection\Migrations\ExtensionMigrationsExtension.php:43 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\core\backend\DependecyInjection\Migrations\ExtensionMigrationsExtension.php on line 43