Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' (using password: YES) in /var/www/html/data/config.php:3 Stack trace: #0 /var/www/html/data/config.php(3): mysqli_connect() #1 /var/www/html/data/national-journals.php(9): include('...') #2 {main} thrown in /var/www/html/data/config.php on line 3