inconsistent range error

SEVERE: SEVERE: java.lang.IllegalArgumentException: inconsistent range at java.base/java.util.concurrent.ConcurrentSkipListMap$SubMap.<init>(ConcurrentSkipListMap.java:2403) at java.base/java.util.concurrent.ConcurrentSkipListMap.subMap(ConcurrentSkipListMap.java:1883) at io.keikai.model.impl.IndexPool.subValues(IndexPool.java:153) at io.keikai.model.impl.SheetImpl.getRowIterator(SheetImpl.java:1764) at io.keikai.ui.au.in.AutoFilterDefaultHandler.scanRows(AutoFilterDefaultHandler.java:471) at io.keikai.ui.au.in.AutoFilterDefaultHandler.processFilter(AutoFilterDefaultHandler.java:119) at io.keikai.ui.au.in.CellMouseCommand.process(CellMouseCommand.java:95) at io.keikai.ui.Spreadsheet.service(Spreadsheet.java:3371) at org.zkoss.zk.ui.impl.DesktopImpl.service(DesktopImpl.java:792) at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1318) at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:611) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:487) at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:495) at