zenhub.log message question

I see a large number of repeating messages in the log and after searching for some of them and not finding anything on the site, I thought I would ask if anyone knows what might be going on.

So, early in the log, I see:

2016-02-23 02:35:14,749 INFO zen.ZenHub: Will post metrics to: http://localhost:8080/api/metrics/store

2016-02-23 02:35:15,827 INFO zen.publisher: publishing failed: Connection was refused by other side: 111: Connection refused.

2016-02-23 02:35:15,828 INFO zen.publisher: queue still contains 5 metrics

These last two repeat many many times. The number of metrics in the queue appears for a while to grow. Eventually, we begin seeing:

2016-02-23 02:36:19,962 INFO zen.publisher: publishing failed: Expected HTTP 200, but received 401 from http://localhost:8080/api/metrics/store

This last message now appears about every 20 minutes.

I don't see anything else in the log that appears to be failing. Does this ring a bell with anyone