我正在使用 webconnector 将我的数据同步到快速书桌面。我收到以下错误。
> QBWC1042: ReceiveResponseXML failed Error message: > System.Web.Services.Protocols.SoapException: Server was unable to > process request. ---> System.NullReferenceException: Object reference > not set to an instance of an object. at > QuickBooksItemOps.extractItemQueryResponses(String response, Session > sess) in > c:\inetpub\wwwroot\QWCInvoiceSample\service\App_Code\QuickBooksItemOps.cs:line > 39 at SampleController.processLastAction(Session sess, String > response) in > c:\inetpub\wwwroot\QWCInvoiceSample\service\App_Code\SampleController.cs:line > 188 at QWCInvoiceSample.receiveResponseXML(String ticket, String > response, String hresult, String message) in > c:\inetpub\wwwroot\QWCInvoiceSample\service\App_Code\QWCInvoiceSample.cs:line > 290 --- End of inner exception stack trace --- More info: > StackTrace = at > System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage > message, WebResponse response, Stream responseStream, Boolean > asyncCall) at > System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String > methodName, Object[] parameters) at > QBWebConnector.localhost.WCWebServiceDoc.receiveResponseXML(String > ticket, String response, String hresult, String message) at > QBWebConnector.localhost.WCWebService.receiveResponseXML(String > ticket, String response, String hresult, String message) at > QBWebConnector.SOAPWebService.receiveResponseXML(String wcTicket, > String response, String hresult, String message) at > QBWebConnector.WebService.do_receiveResponseXML(String wcTicket, > String response, String hresult, String message, Boolean& success, > Boolean& timeout) Source = System.Web.Services
你能指导我解决这个问题吗?