Fatal error: Uncaught Error: Class "WPMailSMTP\Vendor\GuzzleHttp\Promise\RejectionException" not found in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/CancellationException.php:9 Stack trace: #0 {main} thrown in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/CancellationException.php on line 9