Fatal error: Uncaught Error: Class "SellingPartnerApi\SellingPartnerApi" not found in D:\www\vendor\jlevers\selling-partner-api\src\Seller\SellerConnector.php:10 Stack trace: #0 {main} thrown in D:\www\vendor\jlevers\selling-partner-api\src\Seller\SellerConnector.php on line 10