title: Could Not Auto-size Column in p:dataExporter
body: <p>I'm trying to use PrimeFaces DataExporter to export an <code>xlsxstream</code> type of file, but I seem to be getting this error:</p>
  
  <pre><code>WARNING: Could not auto-size column. Make sure the column was tracked prior to auto-sizing the column.
  java.lang.IllegalStateException: Could not auto-size column. Make sure the column was tracked prior to auto-sizing the column.
      at org.apache.poi.xssf.streaming.SXSSFSheet.autoSizeColumn(SXSSFSheet.java:1606)
      at org.apache.poi.xssf.streaming.SXSSFSheet.autoSizeColumn(SXSSFSheet.java:1560)
      at org.primefaces.component.export.ExcelExporter.export(ExcelExporter.java:85)
      at org.primefaces.component.export.DataExporter.processAction(DataExporter.java:145)
      at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
      ...
  </code></pre>
  
  <p>Any idea how to debug this, or what the cause might be?</p>