Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' in /var/www/html/source/php/myShop.php:114 Stack trace: #0 /var/www/html/source/php/myShop.php(114): mysqli->__construct() #1 /var/www/html/source/php/myShop.php(69): myShop->development_mode() #2 /var/www/html/header.php(3): myShop->__construct() #3 /var/www/html/index.php(1): include_once('...') #4 {main} thrown in /var/www/html/source/php/myShop.php on line 114