Fatal error: Uncaught Error: Interface "WPMailSMTP\Vendor\GuzzleHttp\Promise\PromisorInterface" not found in /home/hmstorb/www/wp-content+12/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/guzzle/src/Pool.php:23 Stack trace: #0 {main} thrown in /home/hmstorb/www/wp-content+12/plugins/wp-mail-smtp/vendor_prefixed/guzzlehttp/guzzle/src/Pool.php on line 23