having problem printing out "created_at" date

I don't use entities, just query->builder and I never had the need to print "created_at" and "updated_at" but I decided to do a test and it worked fine:

PHP Code:

$db = db_connect();
$query = $db->table('player_genres')
->where('name_id', 48)
->get();

foreach ( $query->getResult() as $row ) {
    echo "$row->created_at ==> $row->updated_at<br>";
}

echo "<br><pre>";
print_r ($row);
echo "</pre>"; 


The result was:
2021-09-02 12:09:10 ==> 2021-09-02 12:10:24

stdClass Object
(
    [id] => 88
    [name_id] => 48
    [genre] => Easy Listening
    [created_at] => 2021-09-02 12:09:10
    [updated_at] => 2021-09-02 12:10:24
)