Подключение к базе данных - MySQL

Warning: mysqli_connect(): (HY000/1045): Access denied for 
user 'root'@'localhost' (using password: YES) 
in C:\xampp\htdocs\exmpl\admin\index.php on line 6
Access denied for user 'root'@'localhost' (using password: YES)

define("hn","localhost");
define("un","root");
define("db","lan");
define("pw","");
$link = mysqli_connect(hn,un,db,pw);
if (mysqli_connect_errno()) die(mysqli_connect_error());
 
$result = mysqli_query($link, "SELECT * FROM login");
$rows = mysqli_num_rows($result);
 
$rows = $result->num_rows;
for ($j = 0 ; $j < $rows ; ++$j)
{
$result->data_seek($j);
echo 'Author: ' . $result->fetch_assoc()['username'] . '<br>';
$result->data_seek($j);
echo 'Pass: ' . $result->fetch_assoc()['password'] . '<br>';
$result->data_seek($j);
 
}
$result->close();
$conn->close();