Something is wrong in my use of the view.. i think!?

I found something that fixes my issue, if i use the “namespace:” option when building the Router and specify actions using a string (rather than the class)… like so

...
    module MyWeb
      module Controllers
        module Root
          class Index
            include Hanami::Action
            include Hanami::Action::Session
            def call(params)
              session[:counter] ||= 0
              session[:counter] += 1
              puts "CCounter: #{session[:counter]}"
              self.body = IndexView.new(nil, exposures).render
            end 
          end
        end
      end
    end

    Router = Hanami::Router.new(namespace: MyWeb::Controllers) do
      root to: 'root#index'
    end
...

I’d like to understand why it does not work as expected when using constants to specify the actions in the router