circular structure in JSON archive...

[alexgo]

I'm seeing this bug intermittently...
TypeError: Converting circular structure to JSON
at Object.stringify (native)
at Archiver.send (/home/ubuntu/Concurix/cxweb/node_modules/concurix-monitor/node_modules/module-stats/lib/archive.js:82:26)
at wrapper as _onTimeout
at Timer.listOnTimeout as ontimeout