TypeError: You may only yield a function, promise, generator, array, or object, but the following object was passed
2016-01-12T19:02:36+01:00 - error: TypeError: You may only yield a function, promise, generator, array, or object, but the following object was passed: "undefined"
at next (/home/cgeek/.ucoin/node_modules/co/index.js:101:25)
at onFulfilled (/home/cgeek/.ucoin/node_modules/co/index.js:69:7)
at process._tickCallback (node.js:366:9)
2016-01-12T19:02:37+01:00 - warn: undefined