Warning: require_once(/var/www/html/bootstrap/app.php): Failed to open stream: No such file or directory in /var/www/html/public/index.php on line 18

Fatal error: Uncaught Error: Failed opening required '/var/www/html/bootstrap/app.php' (include_path='.:/usr/local/lib/php') in /var/www/html/public/index.php:18 Stack trace: #0 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/resources/server.php(23): require_once() #1 {main} thrown in /var/www/html/public/index.php on line 18