Azure - OnBoard -New Hire Count Report >> Server Error occurred if 'To Date' removed.

Partner login, UIRefresh QA Test1
In Partner/SA login, if user removes 'To Date', server error occurred. PFA screen shot and error log.

Exception : Object reference not set to an instance of an object.
App Error Log : -
Employee ID : 0
Action Name : DateSelectorChanges
Model : System.Web.Mvc.HandleErrorInfo
Controller : Customization
Web Error Log : at WORKTERRA.OnBoard.OnBoardControllerWebTier.GetCollection
(ObjectType I_objectType, Hashtable I_criteria, Object I_context)
at
WORKTERRA.OnBoard.Areas.Customization.Models.ReportsModel.GetNewHireCollection
(String prmFromDate, String prmToDate) in c:\WT\branches\UiRefresh\Web\Web
Projects\OnBoard\Areas\Customization\Models\Reports\ReportsModel.cs:line 297
at
WORKTERRA.OnBoard.Areas.Customization.Models.ReportsModel.DateSelectorChanges
(String prmFromDate, String prmToDate, String prmReportId) in c:\WT\branches
\UiRefresh\Web\Web Projects\OnBoard\Areas\Customization\Models\Reports
\ReportsModel.cs:line 210
at
WORKTERRA.OnBoard.Areas.Customization.Controllers.CustomizationController.DateSe
lectorChanges(String prmFromDate, String prmToDate, String prmReportId) in c:
\WT\branches\UiRefresh\Web\Web Projects\OnBoard\Areas\Customization\Controllers
\Reports\ReportsController.cs:line 22
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller,
Object[] parameters)
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.ActionInvocation.InvokeSynchro
nousActionMethod()
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.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult](IAsyncResult
asyncResult, Object tag)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod
(IAsyncResult asyncResult)
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.b__
3d()
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c
_DisplayClass46.b_3f()
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c
_DisplayClass46.b_3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass33.b_32
(IAsyncResult asyncResult)
at
System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate
(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult](IAsyncResult
asyncResult, Object tag)
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilte
rs(IAsyncResult asyncResult)
at
System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.<>c_Displ
ayClass2b.b__1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.b_1e
(IAsyncResult asyncResult)