Server Error in '/' Application.

Value cannot be null.
Parameter name: source

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: source

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ArgumentNullException: Value cannot be null.
Parameter name: source]
   System.Linq.Enumerable.Where(IEnumerable`1 source, Func`2 predicate) +643
   WebLego.itemmenu.GetValueDatos(String key, IList`1 datos) in C:\Jenkins\workspace\Tools Production\WebLego\WebLegoPlantilla5\itemmenu.aspx.cs:150
   WebLego.<GetListValueDatos>d__9.MoveNext() in C:\Jenkins\workspace\Tools Production\WebLego\WebLegoPlantilla5\itemmenu.aspx.cs:144
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +463
   System.Linq.Enumerable.ToList(IEnumerable`1 source) +69
   WebLego.<>c__DisplayClass8_0.<RenderMenu>b__0(String item) in C:\Jenkins\workspace\Tools Production\WebLego\WebLegoPlantilla5\itemmenu.aspx.cs:126
   WebGrease.Css.Extensions.ListExtensions.ForEach(IEnumerable`1 list, Action`1 action) +180
   WebLego.itemmenu.RenderMenu(IEnumerable`1 listusercontrols, IList`1 datos) in C:\Jenkins\workspace\Tools Production\WebLego\WebLegoPlantilla5\itemmenu.aspx.cs:136
   WebLego.itemmenu.Page_Load(Object sender, EventArgs e) in C:\Jenkins\workspace\Tools Production\WebLego\WebLegoPlantilla5\itemmenu.aspx.cs:52
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +154
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2161


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0