Server Error in '/' Application.

A model description could not be created. Duplicate model name 'T' was found for types '' and ''. Use the [ModelName] attribute to change the model name for at least one of the types so that it has a unique name.

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.InvalidOperationException: A model description could not be created. Duplicate model name 'T' was found for types '' and ''. Use the [ModelName] attribute to change the model name for at least one of the types so that it has a unique name.

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:


[InvalidOperationException: A model description could not be created. Duplicate model name 'T' was found for types '' and ''. Use the [ModelName] attribute to change the model name for at least one of the types so that it has a unique name.]
   Ia.Api.Wa.Areas.HelpPage.ModelDescriptions.ModelDescriptionGenerator.GetOrCreateModelDescription(Type modelType) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\Integrated Applications\api.ia.com.kw\Areas\HelpPage\ModelDescriptions\ModelDescriptionGenerator.cs:140
   Ia.Api.Wa.Areas.HelpPage.HelpPageConfigurationExtensions.GenerateResourceDescription(HelpPageApiModel apiModel, ModelDescriptionGenerator modelGenerator) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\Integrated Applications\api.ia.com.kw\Areas\HelpPage\HelpPageConfigurationExtensions.cs:384
   Ia.Api.Wa.Areas.HelpPage.HelpPageConfigurationExtensions.GenerateApiModel(ApiDescription apiDescription, HttpConfiguration config) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\Integrated Applications\api.ia.com.kw\Areas\HelpPage\HelpPageConfigurationExtensions.cs:248
   Ia.Api.Wa.Areas.HelpPage.HelpPageConfigurationExtensions.GetHelpPageApiModel(HttpConfiguration config, String apiDescriptionId) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\Integrated Applications\api.ia.com.kw\Areas\HelpPage\HelpPageConfigurationExtensions.cs:229
   Ia.Api.Wa.Areas.HelpPage.Controllers.HelpController.Api(String apiId) in C:\Users\Jasem\Documents\Visual Studio 2022\Projects\Integrated Applications\api.ia.com.kw\Areas\HelpPage\Controllers\HelpController.cs:38
   lambda_method(Closure , ControllerBase , Object[] ) +139
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
   System.Web.Mvc.Async.<>c.<BeginInvokeSynchronousActionMethod>b__9_0(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +39
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +77
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass11_0.<InvokeActionMethodFilterAsynchronouslyRecursive>b__0() +80
   System.Web.Mvc.Async.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +396
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass3_6.<BeginInvokeAction>b__4() +50
   System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__1(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +43
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +426
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +172
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158


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