TSR demo company >> Server Error in interviewer login on submitting Evaluation

on Stage, in TSR demo company, Server Error observed in interviewer login on submitting Evaluation. PFA screen shot and error log.

Exception : Cannot insert the value NULL into column `EmailFrom`, table `TSRDemoCompany_12871.rct.EmailCommunication`; column does not allow nulls. INSERT

fails.The statement has been terminated.
App Error Log : ControllerAppTier.Save->RecruitControllerAppTier.Save-

>Recruiter.SubmitCandidateEvaluation=>Recruiter.InsertCandidateEvaluation=>Recruiter.SendEvaluationMail
Employee ID : 580
Action Name : SubmitCandidateEvaluation
Model : System.Web.Mvc.HandleErrorInfo
Controller : ManageCandidate
Web Error Log : at WORKTERRA.Recruit.RecruitControllerWebTier.Save(ObjectType I_objectType, Hashtable I_criteria, Object I_context)
at WORKTERRA.Recruit.Areas.Recruiter.Models.CandidateSubmitEvaluationModel.SaveCandidateEvaluation(CandidateSubmitEvaluationModel

objCandidateSubmitEvaluationModel)
at WORKTERRA.Recruit.Areas.Recruiter.Controllers.ManageCandidateController.SubmitCandidateEvaluation(CandidateSubmitEvaluationModel objModel)
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_DisplayClass13.b_10()
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)