Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\guzzlehttp\guzzle\src\Pool.php:24 Stack trace: #0 {main} thrown in C:\melius\michael.douglas\web\prod\credpay\_common\classes\vendor\guzzlehttp\guzzle\src\Pool.php on line 24