La valeur ne peut pas être null. Nom du paramètre : source

---

Controller = CittadinoOnLine

Azione = Index

Parametri Form =

Parametri Querystring = lingua=fr

Causa =

   à System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
   à SegecNet.Web.Views.CittadinoOnLine.Index.Execute()
   à System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   à System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   à System.Web.WebPages.StartPage.ExecutePageHierarchy()
   à System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   à RazorGenerator.Mvc.PrecompiledMvcView.Render(ViewContext viewContext, TextWriter writer)
   à System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   à System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   à System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)