Fatal error: Uncaught Error: Failed opening required '/var/www/html//vendor/autoload.php' (include_path='.:/usr/local/lib/php') in /var/www/html/pay_test/config/starter.php:20 Stack trace: #0 /var/www/html/pay_test/index.php(4): include() #1 {main} thrown in /var/www/html/pay_test/config/starter.php on line 20