Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in C:\xampp\htdocs\electronica\vendor\sensio\distribution-bundle\Sensio\Bundle\DistributionBundle\DependencyInjection\SensioDistributionExtension.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\sensio\distribution-bundle\Sensio\Bundle\DistributionBundle\DependencyInjection\SensioDistributionExtension.php on line 15