ZOHO CRM: Issue on sending email

ZOHO CRM: Issue on sending email

Hi there

I've been sending a few emails today and it's running OK.

However, just now, I am having an issue - have a pop-up saying: "Sorry, there was a problem processing your request."

So I waited for a few minutes and still had the same issue.

Any ideas?

BTW, I attacthed the issue.

Thank
DC