[Solved] Object reference not set to an instance of an object. NullReferenceException unhandled.

[Nancy]

I am using Telerik menu and for this i am getting error as "Object reference not set to an instance of an object" when first page is getting loaded.

@(Html.Telerik().Menu()
                    .Name("menu")                   
                    .BindTo(MyApp1.Structure.Authorization.GetMenu())
                    .HtmlAttributes(new { style = "float: left;" })
                )  

where GetMenu() method is defined in Authorization class of Structure folder.