Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Helper\DescriptorHelper' not found in C:\xampp\htdocs\plugins\Symfony\Bundle\FrameworkBundle\Console\Helper\DescriptorHelper.php:26 Stack trace: #0 {main} thrown in C:\xampp\htdocs\plugins\Symfony\Bundle\FrameworkBundle\Console\Helper\DescriptorHelper.php on line 26