Redmine

Hello! what happens is that I am trying to make a plugins as it says on the page http://www.redmine.org/wiki/redmine/Plugin_Tutorial
but then you have created, I have the following error:

No route matches "/ polls" with (: method =>:) does not know it may be,

the truth is my first plugin and I'm very new to this, any help they can provide me

Welcome.Gracias