Fatal error: Uncaught Error: Interface "GuzzleHttp\Command\ToArrayInterface" not found in E:\phpProject\TEST\vat_api_de_client\vendor\guzzlehttp\command\src\CommandInterface.php:14 Stack trace: #0 {main} thrown in E:\phpProject\TEST\vat_api_de_client\vendor\guzzlehttp\command\src\CommandInterface.php on line 14