cannot get cpu usage to show properly

[awright424]

I get a an exclamation mark and a response error on that specific panel.
&#10;<center>&#10;<h2>&#10;<p>Graphite encountered an unexpected error while handling your request.</p>&#10;<p>Please contact your site administrator if the problem persists.</p>&#10;</h2>&#10;<br>&#10;<div>&#10;&#10;</div>&#10;&#10;<div>&#10;<pre>Traceback (most recent call last):&#10; File &#34;/usr/lib/python2.7/dist-packages/django/core/handlers/base.py&#34;, line 112, in get_response&#10; response = wrapped_callback(request, *callback_args, **callback_kwargs)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/views.py&#34;, line 110, in renderView&#10; seriesList = evaluateTarget(requestContext, target)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/evaluator.py&#34;, line 10, in evaluateTarget&#10; result = evaluateTokens(requestContext, tokens)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/evaluator.py&#34;, line 21, in evaluateTokens&#10; return evaluateTokens(requestContext, tokens.expression)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/evaluator.py&#34;, line 28, in evaluateTokens&#10; args = [evaluateTokens(requestContext, arg) for arg in tokens.call.args]&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/evaluator.py&#34;, line 21, in evaluateTokens&#10; return evaluateTokens(requestContext, tokens.expression)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/evaluator.py&#34;, line 29, in evaluateTokens&#10; return func(requestContext, *args)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/functions.py&#34;, line 268, in averageSeries&#10; (seriesList,start,end,step) = normalize(seriesLists)&#10; File &#34;/usr/lib/python2.7/dist-packages/graphite/render/functions.py&#34;, line 120, in normalize&#10; step = reduce(lcm,[s.step for s in seriesList])&#10;TypeError: reduce() of empty sequence with no initial value&#10;&#10;</pre>&#10;</div>&#10;&#10;</center>&#10;