Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in C:\Apache24_x64\htdocs\__cms\vendor\guzzlehttp\promises\src\EachPromise.php:8 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\__cms\vendor\guzzlehttp\promises\src\EachPromise.php on line 8