OCSD -> Eligibility report -> Pulling report throws server error

1) Login with employee
2) Reports -> Eligibility report -> Select effective date
3) system throws server error

error log - Exception : The network path was not found.
App Error Log : ControllerAppTier.Save->BenAdminControllerAppTier.Save->AdminUser.Save->EligibilityReason.FetchCheckEligibilityForPlanDesign->EligibilityReason.UpdateDatabase
Employee ID : 2405
Action Name : EligibilityReport
Model : System.Web.Mvc.HandleErrorInfo
Controller : Report
Web Error Log : at WORKTERRA.BenAdmin.BenAdminControllerWebTier.Save(ObjectType I_objectType, Object objInputObject, Object I_context, Boolean I_mode) in c:\WT\branches\UiRefresh-LB\Web\ControllerWebTier\ControllerWebTier\BenAdminControllerWebTier.cs:line 44
at WORKTERRA.BenAdmin.Areas.Report.Models.EligibilityReport.CheckEligibility()
at WORKTERRA.BenAdmin.Areas.Report.Models.EligibilityReport.View()
at WORKTERRA.BenAdmin.Areas.Report.Controllers.ReportController.EligibilityReport(EligibilityReport objEligibilityReport)
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.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.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.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.<>cDisplayClass2b.b_1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c_DisplayClass21.b_1e(IAsyncResult asyncResult)