Unable to save your document at this time. Our team has been notified. Please wait a few minutes and

I keep getting this notifcation - every 15 seconds or so...

"Unable to save your document at this time. Our team has been notified. Please wait a few minutes and try again."

At first I wasn't worried and I kept working on my newsletter but it's been about an hour. 

Is there a way to save locally?