Deprecated message on WP 5.5

Replies: 0

I got this message on my wp 5.5 installation using Query Monitor:

class-phpmailer.php is deprecated since version 5.5.0! Use wp-includes/PHPMailer/PHPMailer.php instead. The PHPMailer class has been moved to wp-includes/PHPMailer subdirectory and now uses the PHPMailer\PHPMailer namespace.

WordPress 5.5
PHP 7.4

Thanks