message board doesn't shows any message

[jynor]

hey can everybody explain me why in Redmine_chat_plugins, the message i wrote cannot be shown in the dashboard,
info the log file says:

Processing ChatRoomsController#send_data (for 192.168.10.1 at 2010-08-05 11:29:35) [POST]
Parameters: {"commit"=>"Chat", "action"=>"send_data", "authenticity_token"=>"", "chat_input"=>"hello", "controller"=>"chat_rooms"}

NameError (undefined local variable or method add_variables_to_assigns' for #ChatRoomsController:0xba6d640):� vendor/plugins/redmine_chat_plugin/app/controllers/chat_rooms_controller.rb:92:insend_data' passenger (2.2.15) lib/phusion_passenger/rack/request_handler.rb:92:in process_request' passenger (2.2.15) lib/phusion_passenger/abstract_request_handler.rb:207:inmain_loop' passenger (2.2.15) lib/phusion_passenger/railz/application_spawner.rb:441:in start_request_handler' passenger (2.2.15) lib/phusion_passenger/railz/application_spawner.rb:381:inhandle_spawn_application' passenger (2.2.15) lib/phusion_passenger/utils.rb:252:in safe_fork' passenger (2.2.15) lib/phusion_passenger/railz/application_spawner.rb:377:inhandle_spawn_application' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:352:in send' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:352:inmain_loop' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:196:in start_synchronously' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:163:instart' passenger (2.2.15) lib/phusion_passenger/railz/application_spawner.rb:222:in start' passenger (2.2.15) lib/phusion_passenger/spawn_manager.rb:253:inspawn_rails_application' passenger (2.2.15) lib/phusion_passenger/abstract_server_collection.rb:126:in lookup_or_add' passenger (2.2.15) lib/phusion_passenger/spawn_manager.rb:247:inspawn_rails_application' passenger (2.2.15) lib/phusion_passenger/abstract_server_collection.rb:80:in synchronize' passenger (2.2.15) lib/phusion_passenger/abstract_server_collection.rb:79:insynchronize' passenger (2.2.15) lib/phusion_passenger/spawn_manager.rb:246:in spawn_rails_application' passenger (2.2.15) lib/phusion_passenger/spawn_manager.rb:145:inspawn_application' passenger (2.2.15) lib/phusion_passenger/spawn_manager.rb:278:in handle_spawn_application' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:352:insend' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:352:in main_loop' passenger (2.2.15) lib/phusion_passenger/abstract_server.rb:196:instart_synchronously'

Rendering /home/kcorp/Redmine/public/500.html (500 Internal Server Error)

can anyone help me?

Regards,