Continue foreach loop even after an exception is encounterd in asp.net core razor pages - asp.net-core

Question

I have to log the exception into a database table and continue the foreach loop without any interruptions .
When i am trying to insert the exception into database table in catch block,its throwing null referenece exception. Here is my code.
foreach (var row in toEmailList)
{
foreach (var matrix in emailMatrixList.Where(u => names.Contains(u.BusinessUnit)))
{
// Send to Staff + Supervisor/Manager
if (row.DaysDueDate <= 42 && row.DaysDueDate >= 28)
{
if (matrix.StaffID.Equals(row.StaffID))
{
if (!row.EmailLevelSent.Equals("First Level"))
{
try {
var message = new MailMessage();
var bodyText = "<div style='font-family: Calibri, Arial, Helvetica, sans-serif;'>" +
"<p>Dear #FirstName #LastName,</p>" +
"<p>This is a notification to remind you that you have <b>#DaysDueDate</b> days to complete the following online <b>#TrainingTitle</b> training.</p>" +
"<p>Please remember to complete the training course within the next few days.</p>" +
"<p>If you do not complete this training within the required time frame, this information will be forwarded to your next level manager.</p>" +
"<p>Thank you very much,<br/>Kind regards,</p>" +
"<p>Manager</p>" +
"</div>";
var body = bodyText.Replace("#FirstName", row.FirstName).Replace("#LastName", row.LastName).Replace("#DaysDueDate", row.DaysDueDate.ToString()).Replace("#TrainingTitle", row.TrainingTitle.ToString());
if (matrix.StaffEmail.Contains("#domain.com"))
{
message.To.Add(new MailAddress(row.StaffEmail));
}
else if (matrix.ManagerEmail.Contains("#domain.com"))
{
message.To.Add(new MailAddress(matrix.ManagerEmail));
}
message.From = new MailAddress(_from);
message.Subject = "Training Notification for " + row.TrainingTitle;
if (matrix.ManagerEmail.Contains("#domain.com"))
{
message.CC.Add(new MailAddress(matrix.ManagerEmail));
}
else if ((matrix.ManagerEmail.Contains("N/A")) || (matrix.ManagerEmail.Contains("NA")) || (matrix.ManagerEmail.Contains("#N/A")) || (matrix.ManagerEmail.Contains("na")))
{
message.To.Add(new MailAddress(row.StaffEmail));
}
if (!string.IsNullOrEmpty(matrix.InTheLoop))
{
message.CC.Add(new MailAddress(matrix.InTheLoop));
}
message.Body = string.Format(body);
message.IsBodyHtml = true;
await smtp.SendMailAsync(message);
TempData["MailSent"] = "MailSent";
Debug.WriteLine("Sending first level email to " + row.FirstName + " " + row.LastName);
Debug.WriteLine("CC: " + message.CC.ToString());
row.EmailLevelSent = "First Level";
Debug.WriteLine("First Level email sent to " + row.FirstName);
}
catch (Exception e)
{
FailedEmails.StaffID = row.StaffID;
FailedEmails.FirstName = row.FirstName;
FailedEmails.LastName = row.LastName;
FailedEmails.StaffEmail = row.StaffEmail;
FailedEmails.ExceptionLog = e.Message;
FailedEmails.SentDate = DateTime.Now;
_context.Entry(FailedEmails).State = EntityState.Added;
}
}
}
}
}
}
Any help would be appreciated, is there anything i am missing. Thanks!