Server Error in '/' Application.

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Line 649:        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/GetListCates", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
Line 650:        public System.Data.DataTable GetListCates(string u, string p) {
Line 651:            object[] results = this.Invoke("GetListCates", new object[] {
Line 652:                        u,
Line 653:                        p});

[WebException: The request failed with HTTP status 404: Not Found.]
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +237343
   System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +273
   wsvtn.ws_webstore_register.GetListCates(String u, String p) in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\604ed06d\92add6a4\App_WebReferences.kmyfr3pr.1.cs:651
   home_news_default_u_news_cate.Page_Load(Object sender, EventArgs e) in c:\Data\Hosting\kttn\tamnghia.vn\wwwroot\home\store\default\u_template_cate.ascx.cs:48
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533