Hubot install on OSX El Capitan

I am trying to install the hubot on OSX El Capitan.

I completed this steps below.

$ npm install -g yo generator-hubot
$ mkdir hubot-example
$ cd hubot-example

I found this error when executing yo hubot.

$ yo hubot
                     _____________________________
                    /                             \
   //\              |      Extracting input for    |
  ////\    _____    |   self-replication process   |
 //////\  /_____\   \                             /
 ======= |[^_/\_]|   /----------------------------
  |   | _|___@@__|__
  +===+/  ///     \_\
   | |_\ /// HUBOT/\\
   |___/\//      /  \\
         \      /   +---+
          \____/    |   |
           | //|    +===+
            \//      |xx|

? Owner shigemk2 <xxxxxxxxxxxxxxxx>
? Bot name hubot-example
? Description A simple helpful robot for your Company
? Bot adapter (campfire) slackgot back false



/usr/local/lib/node_modules/yo/node_modules/rx/dist/rx.js:77
    throw e;
    ^
true

Please tell me the solution.

[LoganBarnett]

Simply providing the adapter worked around the issue for me: yo hubot --adapter="slack"

[technicalpickles]

A fix for this released in generator-hubot@0.4.0. Anyone running into this should npm install -g generator-hubot to get the latest.