Echo Speaks error I don't understand

I just began seeing this error in my hub logs. Nothing seems to be broken, but it looks ominous. Should I track it down? My log levels are set to a very minimal setting so there isn't much to look at, and I don't recognize any timing pattern yet. ** Update - it's every 15 minutes exactly **
It seems "SEEMS" like it began recently, over the last week or so.

Looks like the request to Amazon timed out... ES will normally retry and and eventually get through without intervention.

wakeupServer is trying to access your Heroku or local server instance.

is it down?

I just chalked it up to normal hubitat behavior (things that happen in/around updates). deleted Echo speaks and recreated. Problem gone.