Servlet Error: NullPointer

An unexpected servlet error has occurred.

Stack Trace:



java.lang.NullPointerException at java.lang.String.compareTo(String.java:1155) at org.apache.lucene.index.TermBuffer.compareTo(TermBuffer.java:35) at org.apache.lucene.index.SegmentTermEnum.scanTo(SegmentTermEnum.java:149) at org.apache.lucene.index.TermInfosReader.scanEnum(TermInfosReader.java:163) at org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:152) at org.apache.lucene.index.SegmentTermDocs.seek(SegmentTermDocs.java:51) at org.apache.lucene.index.MultiTermDocs.termDocs(MultiReader.java:425) at org.apache.lucene.index.MultiTermDocs.next(MultiReader.java:376) at org.apache.lucene.limit.LimTermPositions.next(LimTermPositions.java:108) at org.apache.lucene.search.spans.SpanTermQuery$1.next(SpanTermQuery.java:105) at org.apache.lucene.search.spans.SpanOrQuery$1.next(SpanOrQuery.java:189) at org.apache.lucene.search.spans.SpanRecordingScorer.advance(SpanRecordingScorer.java:142) at org.apache.lucene.search.spans.SpanScorer.next(SpanScorer.java:51) at org.apache.lucene.search.spans.SpanRecordingScorer.next(SpanRecordingScorer.java:38) at org.apache.lucene.search.RecordingSearcher.search(RecordingSearcher.java:99) at org.cdlib.xtf.textEngine.DefaultQueryProcessor.processRequest(DefaultQueryProcessor.java:310) at org.cdlib.xtf.crossQuery.CrossQuery.apply(CrossQuery.java:206) at org.cdlib.xtf.crossQuery.CrossQuery.doGet(CrossQuery.java:153) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at org.cdlib.xtf.servletBase.TextServlet.service(TextServlet.java:449) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at com.samaxes.filter.CacheFilter.doFilter(CacheFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:444) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1780) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1739) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:750)

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