Error: getaddrinfo ENOTFOUND x86_64-apple-darwin13.4.0 code example

Example: events js 292 throw er Unhandled 'error' event ^ Error getaddrinfo ENOTFOUND x86_64-apple-darwin13.4.0 at GetAddrInfoReqWrap.onlookup [as oncomplete]

//type this in your terminal:
unset HOST