Servlet Error: NullPointer

An unexpected servlet error has occurred.

Stack Trace:



java.lang.NullPointerException at java.lang.String.compareTo(String.java:1139) 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:157) at org.apache.lucene.index.TermInfosReader.terms(TermInfosReader.java:217) at org.apache.lucene.index.SegmentReader.terms(SegmentReader.java:335) at org.apache.lucene.index.MultiTermEnum.<init>(MultiReader.java:282) at org.apache.lucene.index.MultiReader.terms(MultiReader.java:203) at org.apache.lucene.limit.LimIndexReader.terms(LimIndexReader.java:262) at org.apache.lucene.search.WildcardTermEnum.<init>(WildcardTermEnum.java:69) at org.apache.lucene.search.spans.SpanWildcardQuery.rewrite(SpanWildcardQuery.java:66) at org.apache.lucene.search.BooleanQuery.rewrite(BooleanQuery.java:408) at org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:138) at org.apache.lucene.search.Query.weight(Query.java:94) at org.apache.lucene.search.RecordingSearcher.search(RecordingSearcher.java:89) 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:442) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.samaxes.filter.CacheFilter.doFilter(CacheFilter.java:88) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395) at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:396) at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:357) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1531) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744)

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