anchor.diff:        </tr>
         <tr>
           <th>Responses in the last 24 Hours</th>
  -        <td class="number" id="response_count"><%= number_hiding_zero(@source.cached_version.fetch('responses', {}).fetch('count', 0)) %></td>
  +        <td class="number" id="response_count"><%= number_hiding_zero(@source.cached_version.fetch(:responses, {}).fetch('count', 0)) %></td>
           <td class="number" id="error_count"><%= link_to_if(@source.alerts.total_errors(1).size > 0, number_hiding_zero(@source.alerts.total_errors(1).size), alerts_path(:source => @source.name)) %></td>
         </tr>
         <tr>
  
positive.code:     </tr>
      <tr>
        <th>Events</th>
        <td class="number" id="article_count"><%= number_hiding_zero(@source.cached_version.fetch('article_count', 0)) %></td>
        <td class="number" id="event_count"><%= number_hiding_zero(@source.cached_version.fetch('event_count', 0)) %></td>
      </tr>
  
      <% if can?(:read, Alert) %>
  
negative.code:       </tr>
        <tr>
          <th>Response duration in the last 24 Hours (ms)</th>
          <td class="number" id="average_count"><%= number_hiding_zero(@source.cached_version.fetch(:responses, {}).fetch('average', 0)) %></td>
          <td class="number" id="maximum_count"><%= number_hiding_zero(@source.cached_version.fetch(:responses, {}).fetch('maximum', 0)) %></td>
        </tr>
      <% end %>
    </tbody>
  