Ruby on Rails

require 'rubygems'
require 'hpricot'
require 'open-uri'
doc = Hpricot(open("http://graph.facebook.com/226723089703"))
@doc = doc.to_s.gsub(/"id.+?likes":/,"").gsub("{","").gsub("}","")
puts @doc
OR
require 'rubygems'
require 'nokogiri'
require 'open-uri'
# Get a Nokogiri::HTML:Document for the page we're interested in...
doc = Nokogiri::HTML(open('https://graph.facebook.com/19292868552'))
puts doc

These two .rb files working fine on my local but giving error
" Invalid argument - http://graph.facebook.com/19292868552
(Errno::EINVAL)" On Server
if i remove line require 'open-uri' on my local error comes again on
local

Any Idea ?
Thanks in Advance ..

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