Why does it work on Console but not on App?

fetcher_controller.rb

# Fetchs campaigns from SiB

    class SibCampaignFetcher
    # fetchs SIB Campaigns
      # Starts SiB Communication
      def sib
          @sib ||= Mailin.new("URL","APIKEY")
      end

      # Define the data to collect
      def shoot_criteria
         { "type"=>"classic", "status" => "sent", "page"=>1, "page_limit"=>1000 }
      end

      def shoot_criteria2
        { "type"=>"classic", "status" => "sent", "page"=>2, "page_limit"=>1000 }
      end

      # Map the data to collect
      def shoots
         @shoots ||= sib.get_campaigns_v2(shoot_criteria)
      end

      def shoots2
        @shoots2 ||= sib.get_campaigns_v2(shoot_criteria2)
      end

      def needed_records
        first_cut = shoots.dig('data')
        final_cut = first_cut.dig('campaign_records')
      end

      def needed_records2
        first_cut2 = shoots2.dig('data')
        final_cut2 = first_cut2.dig('campaign_records')
      end

      def campaign_records
         @campaign_records ||= needed_records.map
      end

      def campaign_records2
        @campaign_records2 ||= needed_records2.map
      end

        # Insert data collected to database
        def sib_campaigns_fetcher
          # update/create
          campaign_records.each do |record|
            shoot = SibCampaign.find_or_create_by(:campaign_id => record["id"])
            unless shoot.update(record)
                # the data was invalid, so the shoot wasn't saved, do something about that here
            end
          end
          campaign_records2.each do |record|
            shoot2 = SibCampaign.find_or_create_by(:campaign_id => record["id"])
            unless shoot2.update(record)
                # the data was invalid, so the shoot wasn't saved, do something about that here
            end
            x = SibCampaign.where(:turnover => nil)
            x.each do |i|
              i.turnover = 0
              i.cost = 0
              i.margin = 0
              i.save
            end
          end
          flash[:notice] = "Shoots beign updated successfully."
          redirect_to('/fetcher')
        end
    end

index.html.erb

<%= link_to(image_tag("refresh.png", :size => '25x25', :alt => "details"), {:controller => 'fetcher', :action => 'sib_campaigns_fetcher'}, :class => 'back-link') %>