title: Uncaught TypeError: Cannot read property 'options' of undefined highstocks drilldown pie
body: <p>I am getting an error all of the sudden for <code>drilldown</code> of <code>HighStocks</code> drilldown with PIE chart.</p>
  
  <p>It runs perfectly over <code>Highchart.js</code> but when switched over to <code>Highstocks.js</code> it gives the error.</p>
  
  <pre><code>Uncaught TypeError: Cannot read property 'options' of undefined
  </code></pre>
  
  <p>Here is the JSFiddle with <code>Highcharts.js</code> and <code>HighStocks.js</code>, once again it works perfectly with <code>HighCharts.js</code></p>
  
  <p><a href="https://jsfiddle.net/fakhruddin/boszwvgh/1/" rel="nofollow noreferrer">https://jsfiddle.net/fakhruddin/boszwvgh/1/</a></p>
  
  <p>Note: JSFiddle has a dummy implementation of what I am trying over my website.</p>
  
  <p><a href="https://i.stack.imgur.com/ILSTq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ILSTq.png" alt="Screen showing console error on click of PIE, I am on Chrome"></a></p>