Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in /home/retrocubedev/public_html/qa/rent_now/vendor/guzzlehttp/guzzle/src/Pool.php:20 Stack trace: #0 {main} thrown in /home/retrocubedev/public_html/qa/rent_now/vendor/guzzlehttp/guzzle/src/Pool.php on line 20