Need facebook connect for restfull authendication

i have integrate facebooker with restfull authendication. i have an
error with is occured when i logged in with facebook account.
The error is

=========================
StandardError in UsersController#link_user_accounts

Unknown method

RAILS_ROOT: /home/kunalan/Desktop/connect_tutorial
Application Trace | Framework Trace | Full Trace

/home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/
facebooker/parser.rb:886:in process' /home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/ facebooker/parser.rb:38:inparse’
/home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/
facebooker/service.rb:67:in post' /home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/ facebooker/session.rb:703:inpost_without_logging’
/home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/
facebooker/session.rb:714:in post' /home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/ facebooker/logging.rb:20:inlog_fb_api’
/usr/lib/ruby/1.8/benchmark.rb:308:in realtime' /home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/ facebooker/logging.rb:20:inlog_fb_api’
/home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/
facebooker/session.rb:713:in post' /home/kunalan/Desktop/connect_tutorial/vendor/plugins/facebooker/lib/ facebooker/models/user.rb:404:inregister’
/home/kunalan/Desktop/connect_tutorial/app/models/user.rb:85:in
register_user_to_fb' /home/kunalan/Desktop/connect_tutorial/app/models/user.rb:63:increate_from_fb_connect’
/home/kunalan/Desktop/connect_tutorial/app/controllers/
users_controller.rb:31:in `link_user_accounts’

====================================

please anybody advice my

by
nirosh