Fatal error: Uncaught Error: Interface "WPMailSMTP\Vendor\GuzzleHttp\Promise\PromiseInterface" not found in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/Promise.php:13 Stack trace: #0 {main} thrown in /home/samipe/public_html/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/Promise.php on line 13