I loaded about 20,000 docs. When I tried to do any search, I received the following error. What should I do to fix this? Thanks.
-- HTTP ERROR: 500 null java.lang.NullPointerException at org.apache.solr.search.SolrQueryParser.getFieldQuery(SolrQueryParser.java:73 ) at org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1092) at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:979) at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:907) at org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:896 ) at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:146) at org.apache.solr.search.QueryParsing.parseQuery(QueryParsing.java:94) at org.apache.solr.request.StandardRequestHandler.handleRequestBody(StandardReq uestHandler.java:109) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase. java:77) at org.apache.solr.core.SolrCore.execute(SolrCore.java:658) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:1 91) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java: 159) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler .java:1089) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerColl ection.java:211) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:11 4) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:285) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:502) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnectio n.java:821) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:208) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:378) at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:22 6) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:4 42) RequestURI=/solr/select/