Getting "Requested 15 dimensions; only 7 are allowed." often

[jasperkennis]

After a couple of reloads of the page displaying some results from my api interactions, I often get a Requested 15 dimensions; only 7 are allowed. warning (it's not always 15, that differs). It seems that on every pageload the same instance of Garb::Model get's repopulated with metrics and dimensions which I set to classes in a module on the top of my file. Should I define the report class elsewhere?

The module looks like this:

module GoogleAnalytics
    class Client < OAuth2::Client
        def initialize
            super ENV['ADMIN_DASHBOARD_GOOGLE_CLIENT_ID'], ENV['ADMIN_DASHBOARD_GOOGLE_CLIENT_SECRET']
        end
    end

    class Token < OAuth2::AccessToken
        def initialize(token)
            super GoogleAnalytics::Client.new, token
        end
    end

    class NumberOfEventsForLabel
        extend Garb::Model

        metrics :total_events
        dimensions :event_category, :event_action, :event_label
    end

    class NumberOfVisitsPerPage
        extend Garb::Model

        metrics :page_views
        dimensions :page_path
    end
end

And I call the result via the shorthand: profile.number_of_visits_per_page.each do |res|. After doing that a couple of times, the too many dimensions error is thrown.