Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' in /var/www/veterinarylicensesystem/index.php:28 Stack trace: #0 /var/www/veterinarylicensesystem/index.php(28): mysqli->__construct() #1 /var/www/veterinarylicensesystem/index.php(114): Database::getConnection() #2 /var/www/veterinarylicensesystem/index.php(196): Auth->__construct() #3 {main} thrown in /var/www/veterinarylicensesystem/index.php on line 28