Server Error in '/' Application.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

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.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

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:


[ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index]
   System.Collections.ArrayList.get_Item(Int32 index) +14538023
   Ia.TentPlay.Cl.Model.Memorise.German.WeightedRandomTypeIdAccordingTypeDistribution(Guid userId) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\TentPlay\cl\model\memorise\german.cs:175
   Ia.TentPlay.Cl.Model.Memorise.Test.CalculatedTestQuestionAndOptions(TestOption testOption, Score& testQuestion, List`1& optionList, String& debug) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\TentPlay\cl\model\memorise\test.cs:91
   Memorise_German.DisplayNewQuestion() in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\TentPlay\tentplay.com\memorise\german.aspx.cs:71
   Memorise_German.Page_Load(Object sender, EventArgs e) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\TentPlay\tentplay.com\memorise\german.aspx.cs:57
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +154
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4077


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.9220.0