Fatal error: Uncaught Exception: Vendor autoload is not found. Please run 'composer install' under application root directory. in /var/www/BTL-2.4.6/html-new/app/autoload.php:46 Stack trace: #0 /var/www/BTL-2.4.6/html-new/app/bootstrap.php(44): require_once() #1 /var/www/BTL-2.4.6/html-new/pub/static.php(9): require('...') #2 {main} thrown in /var/www/BTL-2.4.6/html-new/app/autoload.php on line 46