Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in D:\Apache24\www\api.print.nxytec.cn\back\vendor\guzzlehttp\guzzle\src\Pool.php:24 Stack trace: #0 {main} thrown in D:\Apache24\www\api.print.nxytec.cn\back\vendor\guzzlehttp\guzzle\src\Pool.php on line 24