getaddrinfo failed what does that mean

Question

I am getting this error when launching the hello world sample:

 File "C:\Python27\lib\socket.py", line 224, in meth
    return getattr(self._sock,name)(*args)   gaierror: [Errno 11004]
getaddrinfo failed

This is from where I launched it: http://bottlepy.org/docs/dev/.

Can someone help me with this?