Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\TaskQueueInterface" not found in /home/easysales/public_html/google-cloud-php/vendor/guzzlehttp/promises/src/TaskQueue.php:14 Stack trace: #0 {main} thrown in /home/easysales/public_html/google-cloud-php/vendor/guzzlehttp/promises/src/TaskQueue.php on line 14