Fatal error: Uncaught Error: Interface 'WPMailSMTP\Vendor\Psr\Http\Message\MessageInterface' not found in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\psr\http-message\src\ResponseInterface.php:20 Stack trace: #0 {main} thrown in E:\www\web\wp-content\plugins\wp-mail-smtp\vendor_prefixed\psr\http-message\src\ResponseInterface.php on line 20