Fatal error: Uncaught Error: Interface 'WPMailSMTP\Vendor\GuzzleHttp\Promise\PromiseInterface' not found in /home/wpsindicoprofiss/www/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/FulfilledPromise.php:11 Stack trace: #0 {main} thrown in /home/wpsindicoprofiss/www/wp-content/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/promises/src/FulfilledPromise.php on line 11