public IActionResult TeacherSubmissions(string id)
        {
            try
            {
                string urlEnc = Encryption.SymmetricDecrypt(id);
                Guid   decId  = Guid.Parse(urlEnc);

                var submissionList = _submissionService.GetSubmissionsForTeacher(decId);
                return(View(submissionList));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex.Message + " ip: " + GetIpAddress() + " | Timestamp: " + DateTime.Now + " | Email: " + User.Identity.Name);
                return(RedirectToAction("Error", "Home"));
            }
        }