I am getting the above error when trying to send an email.
Full message is
System.ArgumentNullException: Value cannot be null. Parameter name: address at System.Net.Mail.MailAddress..ctor(String address, String displayName, Encoding displayNameEncoding) at Nop.Services.Messages.EmailSender.SendEmail(EmailAccount emailAccount, String subject, String body, String fromAddress, String fromName, String toAddress, String toName, String replyto, IEnumerable`1 bcc, IEnumerable`1 cc) at Nop.Services.Messages.QueuedMessagesSendTask.Execute()
However, when I use 'Send test email' it works.
I am getting this error when user tries to send an email response with active chat. That is if the operator is not present.
Thanks in advance for the help.
Prathima