Warning: a promise was created in a handler at scenario.js but was not returned from it

[johnsickels]

(node:131) Warning: a promise was created in a handler at /workspace/node_modules/flagpole/dist/scenario.js:4:12 but was not returned from it, see http://goo.gl/rRqMUw
    at Function.PromiseMapSeries [as mapSeries] (/workspace/node_modules/bluebird/js/release/each.js:11:12)

This usually means that you simply forgot a return statement somewhere, which will cause a runaway promise that is not connected to any promise chain.

We are seeing this warning a lot in one of our projects