Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in /home/stestbornafit/public_html/inbox-service/vendor/guzzlehttp/guzzle/src/Pool.php:23 Stack trace: #0 {main} thrown in /home/stestbornafit/public_html/inbox-service/vendor/guzzlehttp/guzzle/src/Pool.php on line 23