Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' in /var/www/html/api-loyal/function.php:11 Stack trace: #0 /var/www/html/api-loyal/function.php(11): mysqli->__construct() #1 /var/www/html/api-loyal/classes.php(5): perfectworld->__construct() #2 /var/www/html/api-loyal/index.php(7): require_once('...') #3 {main} thrown in /var/www/html/api-loyal/function.php on line 11