Fatal error: Uncaught Error: Interface "WPMailSMTP\Providers\MailerInterface" not found in C:\xampp\htdocs\wordpress\wp-content\pluginsBK\wp-mail-smtp\src\Providers\MailerAbstract.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wordpress\wp-content\pluginsBK\wp-mail-smtp\src\Providers\MailerAbstract.php on line 16