error_log can not output

I added this in the functions.php of the theme.

add_filter('authenticate', 'check_login', 100, 3);
function check_login($user, $username, $password) {
    error_log("ddddddddddddddddddddddddd");
}

I could not login any more, which means the hook is working.
But I could not found the log in C:\xampp\php\logs