                 @.$('.progress_bar_full_container').slideUp 'fast'
 
         render: =>
+            if not @datacenter?
+                return ''
             replicas_count = DataUtils.get_replica_affinities(@model.get('id'), @datacenter.get('id'))
             if @model.get('primary_uuid') is @datacenter.get('id')
                 replicas_count++

            @render()

        render_progress: =>
            progress_data = DataUtils.get_backfill_progress_agg @model.get('id'), @datacenter.get('id')

            if progress_data? and _.isNaN(progress_data.percentage) is false

                @datacenter = universe_datacenter
            else if datacenters.get(datacenter_id)?
                @datacenter = datacenters.get datacenter_id
            if @datacenter?
                @datacenter.on 'all', @render

            @model.on 'change:primary_uuid', @render
            progress_list.on 'all', @render_progress
