We seem to have experienced a problem.
> The reasons for this are the following:
  • We are experiencing difficulties with our web site.

Exception message: no segments* file found in org.apache.lucene.store.NIOFSDirectory@/net/isilonP/public/ro/cm/.snapshot/cm_2019-02-16_07:00/indexes/chebi/current lockFactory=org.apache.lucene.store.NativeFSLockFactory@996a671: files: [write.lock]
Exception type: java.io.FileNotFoundException
Exception stacktrace: java.io.FileNotFoundException: no segments* file found in org.apache.lucene.store.NIOFSDirectory@/net/isilonP/public/ro/cm/.snapshot/cm_2019-02-16_07:00/indexes/chebi/current lockFactory=org.apache.lucene.store.NativeFSLockFactory@996a671: files: [write.lock] at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:628) at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:73) at org.apache.lucene.index.IndexReader.open(IndexReader.java:316) at org.apache.lucene.index.IndexReader.open(IndexReader.java:202) at org.apache.lucene.search.IndexSearcher.(IndexSearcher.java:78) at uk.ac.ebi.chebi.utilities.search.handler.LuceneHandler.getLuceneIndexes(LuceneHandler.java:78) at uk.ac.ebi.chebi.utilities.search.handler.LuceneHandler.search(LuceneHandler.java:46) at uk.ac.ebi.chebi.utilities.search.controller.SearchController.search(SearchController.java:90) at uk.ac.ebi.chebi.webapps.public1.controller.AdvancedSearchFtAction.execute(AdvancedSearchFtAction.java:202) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:203) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:277) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)