When trying to save data for demographic page throwing server error:
Refer below Error Log

Exception : Object reference not set to an instance of an object.
App Error Log : -
Employee ID : 1831
Action Name : GetEmployeeProfileInfo
Model : System.Web.Mvc.HandleErrorInfo
Controller : Customization
Web Error Log : at WORKTERRA.BenAdmin.BenefitsControllerWebTier.SaveAndGetData(Object I_Object, Int32 I_ObjectType, Boolean I_Mode, Object I_context, Hashtable I_Criteria, Boolean I_needCollection)
at WORKTERRA.Shared.Areas.Customization.Models.EmployeeProfileModel.UpdateEmployeeAttribute(EmployeeData EmployeeAttributeObj, EmployeeDataScreen& objUserDetails, Int32 I_TableRef, Int32 I_SaveAndContinue)
at WORKTERRA.Shared.Areas.Customization.Models.EmployeeProfileModel.SaveProfile(EmployeeData objEmployeeData, EmployeeDataScreen& objUser, Int32 I_TableRef, Int32 I_SaveAndContinue)
at WORKTERRA.Shared.Areas.Customization.Controllers.CustomizationController.GetEmployeeProfileInfo(EmployeeProfileModel Obj_EmployeeProfileModel)
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.ControllerActionInvoker.<>c_DisplayClass15.b_12()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)