エラー java.util.NoSuchElementException

 Exception in thread "main" java.util.NoSuchElementException
              at java.util.AbstractList$Itr.next(AbstractList.java:350)
              at sprint.reporter.SprintReporter.process(Unknown Source)
             at sprint.main.SprintMain.main(Unknown Source)
      Java Result: 1

        while(iter.hasNext()) {
              ArrayList<SprintUserStory> undoneUserStoriesList = SprintUtil.getUndoneUserStoriesList(iter.next().getID(),iter.next().getPkey( )); //Root cause
              if(undoneUserStoriesList.size() >0){
                  willdonefeautre--;
               }

       while (iter.hasNext()) {
               JIRAFeature jirafeaturetemp = iter.next();
               ArrayList<SprintUserStory> undoneUserStoriesList = SprintUtil.getUndoneUserStoriesList(jirafeaturetemp.getID(),jirafeaturetemp. getPkey());
                if(undoneUserStoriesList.size() >0){
                   willdonefeautre--;
                }