Error Occured

getaddrinfo: hostname nor servname provided, or not known
/usr/local/lib/ruby/1.8/net/http.rb:560:in `initialize'
kfes-rss-antenna.cgi:93:in `join'
kfes-rss-antenna.cgi:93:in `makePageCache'
kfes-rss-antenna.cgi:93:in `each'
kfes-rss-antenna.cgi:93:in `makePageCache'
kfes-rss-antenna.cgi:89:in `each'
kfes-rss-antenna.cgi:89:in `makePageCache'
kfes-rss-antenna.cgi:83:in `open'
kfes-rss-antenna.cgi:83:in `makePageCache'
kfes-rss-antenna.cgi:70:in `analyzeQuery'
kfes-rss-antenna.cgi:151