我还尝试将 .NET Standard 版本更改为旧版本,但仍然出现相同的错误。System.ServiceModel.FaultException`1[[System.ServiceModel.ExceptionDetail, System.ServiceModel, Version=2.0.5.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Error in deserializing body of request message for operation 'GetData'. OperationFormatter encountered an invalid Message body. Expected to find node type 'Element' with name 'GetData' and namespace 'http://tempuri.org/'. Found node type 'Element' with name 'GetDataAsync' and namespace 'http://tempuri.org/'