java.lang.IllegalArgumentException: Source may not be null
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java.lang.IllegalArgumentException: Source may not be null
at webwork.util.SubsetIteratorFilter.setSource(SubsetIteratorFilter.java:33)
at webwork.view.taglib.iterator.SubsetIteratorTag.doStartTag(SubsetIteratorTag.java:66)
at org.apache.jsp.dashboard$jsp._jspService(dashboard$jsp.java:3498)