Here is my actual error: No route matches [GET] \"/members/sign_out\"
Since most people will use \"users\" I thought it would be more helpful to have that in th
Although I don't know the cause, the reason why you are getting that message is because in your routes you have
destroy_member_session DELETE /members/sign_out(.:format) {:action=>"destroy", :controller=>"devise/sessions"}
Which means that route is only available with the DELETE method as opposed to GET. This is a bit weird since in the docs for devise it says that it should create it as GET route (https://github.com/plataformatec/devise/blob/master/lib/devise/rails/routes.rb#L30)
With it as a DELETE route, you should be able to logout using
link_to :logout, destroy_member_session_path, :method => :delete