Raised exception while starting the application. Fix the error and restart.

Exception
java.util.NoSuchElementException: Feature could not be read; a the index may be invalid
Message
Feature could not be read; a the index may be invalid
Handler
org.fao.geonet.Geonetwork
Stack
java.util.NoSuchElementException: Feature could not be read; a the index may be invalid
	at org.geotools.data.shapefile.indexed.IndexedFidReader.next(IndexedFidReader.java:317)
	at org.geotools.data.FIDFeatureReader.readFeature(FIDFeatureReader.java:128)
	at org.geotools.data.FIDFeatureReader.next(FIDFeatureReader.java:102)
	at org.geotools.data.FIDFeatureReader.next(FIDFeatureReader.java:57)
	at org.geotools.feature.FeatureReaderIterator.next(FeatureReaderIterator.java:78)
	at org.geotools.feature.FeatureReaderIterator.next(FeatureReaderIterator.java:47)
	at org.geotools.feature.collection.DelegateFeatureIterator.next(DelegateFeatureIterator.java:58)
	at org.fao.geonet.kernel.search.spatial.SpatialIndexWriter.populateIndex(SpatialIndexWriter.java:430)
	at org.fao.geonet.kernel.search.spatial.SpatialIndexWriter.getIndex(SpatialIndexWriter.java:293)
	at org.fao.geonet.kernel.search.SearchManager$Spatial.<init>(SearchManager.java:1725)
	at org.fao.geonet.kernel.search.SearchManager.initNonStaticData(SearchManager.java:539)
	at org.fao.geonet.kernel.search.SearchManager.init(SearchManager.java:519)
	at org.fao.geonet.Geonetwork.start(Geonetwork.java:319)
	at jeeves.server.JeevesEngine.initAppHandler(JeevesEngine.java:452)
	at jeeves.server.JeevesEngine.init(JeevesEngine.java:173)
	at jeeves.server.sources.http.JeevesServlet.init(JeevesServlet.java:82)
	at javax.servlet.GenericServlet.init(GenericServlet.java:160)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:958)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1599)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)