“/”应用程序中的服务器错误。

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[InvalidOperationException: 已有打开的与此 Command 相关联的 DataReader，必须首先将它关闭。]
   System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) +6548689
   System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +301
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +151
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +104
   System.Data.SqlClient.SqlCommand.ExecuteScalar() +270
   HX.Database.DataContext.ExecuteQuery(String sql, Object[] params) +112
   HX.Config.ConfigAccess.GetConfigDocument(String siteDomain) +1861
   HX.Config.ConfigAccess.CreateAccountConfigManager(String accountDomain) +126
   HX.Config.ConfigAccess.get_CurrentAccountConfigManager() +253
   HX.Account.AccountAccess.Authorize(RouteData routeData) +322
   HX.Extension._Closure$__1-0._Lambda$__0(Int32 result, Int64 publicNumberID, String weixinUserOpenID) +1823
   HX.Extension._Closure$__1-0._Lambda$__R1(Int32 a0, Int64 a1, Object a2) +111
   HX.WeixinAPI.OAuth2.Start() +2201
   HX.Extension.Helper.Initialize(IExplorer explorer, RouteData routeData) +803
   HX.Web.SiteController.Initialize(RequestContext requestContext) +91
   System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +246
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) +108
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) +111
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +150
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) +203
   System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +681
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +12272591
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288