Fatal error: Uncaught Error: Class "WPForms\Emails\Mailer" not found in /home/oxygenco/prod/wordpress/wp-content/plugins/wpforms-lite/src/Emails/Notifications.php:23 Stack trace: #0 {main} thrown in /home/oxygenco/prod/wordpress/wp-content/plugins/wpforms-lite/src/Emails/Notifications.php on line 23