Fatal error: Uncaught Error: Class "Symfony\Component\Console\Helper\Helper" not found in /home2/yiikharazmisabt/public_html/yii2-app/vendor/symfony/console/Helper/DescriptorHelper.php:27 Stack trace: #0 {main} thrown in /home2/yiikharazmisabt/public_html/yii2-app/vendor/symfony/console/Helper/DescriptorHelper.php on line 27