Azure - UIRefresh QA Test1 - SA Login

In TourBuilder, while previewing a tour, Back button is displayed even for first form. Server Error is produced on click of this button. PFA screen shots and Error log.

Exception : Index was out of range. Must be non-negative and less than the size of the

collection.Parameter name: index
App Error Log : -
Employee ID : 0
Action Name : StartTourPreview
Model : System.Web.Mvc.HandleErrorInfo
Controller : Customization
Web Error Log : at

WORKTERRA.OnBoard.Areas.Customization.Models.DisplayTourModel.NavigatetoTourDisplayTour()
at

WORKTERRA.OnBoard.Areas.Customization.Controllers.CustomizationController.StartTourPreview()
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext,

IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext

controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.b__39(IAsyncResult asyncResult,

ActionInvocation innerInvokeState)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult

asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.b__3d()
at

System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass

46.b__3f()
at

System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass

46.b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass33.b_32(IAsyncResult

asyncResult)
at

System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.<>cDisplayClass2b.b_1

c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.b_1e(IAsyncResult

asyncResult)