Hiki Error

undefined method `header' for nil:NilClass (NoMethodError)
/usr/local/hiki/hiki.cgi:38:in `<top (required)>'
/home/itpass/public_html/hiki/hiki.cgi:2:in `load'
/home/itpass/public_html/hiki/hiki.cgi:2:in `<main>'