IndexReader already closed

Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed
at org.apache.lucene.index.IndexReader.ensureOpen(IndexReader.java:196)
at org.apache.lucene.index.MultiReader.document(MultiReader.java:214)
at org.apache.lucene.index.FilterIndexReader.document(FilterIndexReader.java:147)
at org.apache.jackrabbit.core.query.lucene.SortedLuceneQueryHits.nextScoreNode(SortedLuceneQueryHits.java:139)
at org.apache.jackrabbit.core.query.lucene.QueryHitsAdapter.nextScoreNodes(QueryHitsAdapter.java:54)
at org.apache.jackrabbit.core.query.lucene.FilterMultiColumnQueryHits.nextScoreNodes(FilterMultiColumnQueryHits.java:63)
at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.collectScoreNodes(QueryResultImpl.java:328)
at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.getResults(QueryResultImpl.java:291)
at org.hippoecm.repository.query.lucene.HippoQueryResult.<init>(HippoQueryResult.java:64)
at org.hippoecm.repository.query.lucene.ServicingSearchIndex$2.execute(ServicingSearchIndex.java:152)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:131)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:128)
at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:127)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:379)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:92)
at org.hippoecm.repository.decorating.checked.QueryDecorator.execute(QueryDecorator.java:62)
at org.onehippo.forge.relateddocs.providers.SimilaritySearchRelatedDocsProvider.getRelatedDocs(SimilaritySearchRelatedDocsProvider.java:89)
at org.onehippo.forge.relateddocs.RelatedDocSuggestor.getRelatedDocs(RelatedDocSuggestor.java:66)
at org.onehippo.forge.relateddocs.editor.RelatedDocsSuggestPlugin$RelatedDocsSuggestView.getItemModelsList(RelatedDocsSuggestPlugin.java:192)
at org.onehippo.forge.relateddocs.editor.RelatedDocsSuggestPlugin$RelatedDocsSuggestView.getItemModels(RelatedDocsSuggestPlugin.java:179)
at org.apache.wicket.markup.repeater.RefreshingView.onPopulate(RefreshingView.java:94)

org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed
at org.apache.lucene.index.IndexReader.ensureOpen(IndexReader.java:196)
at org.apache.lucene.index.MultiReader.document(MultiReader.java:214)
at org.apache.lucene.index.FilterIndexReader.document(FilterIndexReader.java:147)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$SimpleChildrenCalculator.getHits(ChildAxisQuery.java:620)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.calculateChildren(ChildAxisQuery.java:474)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.next(ChildAxisQuery.java:392)
at org.apache.lucene.search.ConjunctionScorer.init(ConjunctionScorer.java:80)
at org.apache.lucene.search.ConjunctionScorer.next(ConjunctionScorer.java:48)
at org.apache.lucene.search.BooleanScorer2.score(BooleanScorer2.java:319)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.calculateChildren(ChildAxisQuery.java:451)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.next(ChildAxisQuery.java:392)
at org.apache.lucene.search.Scorer.score(Scorer.java:57)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.calculateChildren(ChildAxisQuery.java:451)
at org.apache.jackrabbit.core.query.lucene.ChildAxisQuery$ChildAxisScorer.next(ChildAxisQuery.java:392)
at org.apache.lucene.search.ConjunctionScorer.init(ConjunctionScorer.java:80)
at org.apache.lucene.search.ConjunctionScorer.next(ConjunctionScorer.java:48)
at org.apache.lucene.search.BooleanScorer2.next(BooleanScorer2.java:352)
at org.apache.jackrabbit.core.query.lucene.LuceneQueryHits.nextScoreNode(LuceneQueryHits.java:56)
at org.apache.jackrabbit.core.query.lucene.QueryHitsAdapter.nextScoreNodes(QueryHitsAdapter.java:54)
at org.apache.jackrabbit.core.query.lucene.FilterMultiColumnQueryHits.nextScoreNodes(FilterMultiColumnQueryHits.java:63)
at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.collectScoreNodes(QueryResultImpl.java:328)
at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.getResults(QueryResultImpl.java:291)
at org.hippoecm.repository.query.lucene.HippoQueryResult.<init>(HippoQueryResult.java:64)
at org.hippoecm.repository.query.lucene.ServicingSearchIndex$2.execute(ServicingSearchIndex.java:152)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:131)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:128)
at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:127)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:379)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:92)
at org.hippoecm.repository.standardworkflow.FolderWorkflowImpl.add(FolderWorkflowImpl.java:277)

Caused by: org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed
at org.apache.lucene.index.IndexReader.ensureOpen(IndexReader.java:196)
at org.apache.lucene.index.IndexReader.termDocs(IndexReader.java:778)
at org.apache.jackrabbit.core.query.lucene.TermDocsCache.termDocs(TermDocsCache.java:98)
at org.apache.jackrabbit.core.query.lucene.CachingIndexReader.termDocs(CachingIndexReader.java:323)
at org.apache.jackrabbit.core.query.lucene.SharedIndexReader.termDocs(SharedIndexReader.java:76)
at org.apache.jackrabbit.core.query.lucene.ReadOnlyIndexReader.termDocs(ReadOnlyIndexReader.java:195)
at org.apache.lucene.search.TermQuery$TermWeight.scorer(TermQuery.java:64)
at org.apache.jackrabbit.core.query.lucene.JackrabbitTermQuery$JackrabbitTermWeight.createScorer(JackrabbitTermQuery.java:67)
at org.apache.jackrabbit.core.query.lucene.AbstractWeight.scorer(AbstractWeight.java:83)
at org.apache.jackrabbit.core.query.lucene.AbstractWeight.scorer(AbstractWeight.java:78)
at org.apache.lucene.search.BooleanQuery$BooleanWeight.scorer(BooleanQuery.java:230)
at org.apache.lucene.search.BooleanQuery$BooleanWeight.scorer(BooleanQuery.java:230)
at org.apache.lucene.search.BooleanQuery$BooleanWeight.scorer(BooleanQuery.java:230)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:131)
at org.apache.lucene.search.Searcher.search(Searcher.java:126)
at org.apache.lucene.search.Searcher.search(Searcher.java:105)
at org.apache.jackrabbit.core.query.lucene.SortedLuceneQueryHits.getHits(SortedLuceneQueryHits.java:159)
at org.apache.jackrabbit.core.query.lucene.SortedLuceneQueryHits.<init>(SortedLuceneQueryHits.java:116)
at org.apache.jackrabbit.core.query.lucene.JackrabbitIndexSearcher.evaluate(JackrabbitIndexSearcher.java:109)
at org.apache.jackrabbit.core.query.lucene.JackrabbitIndexSearcher.execute(JackrabbitIndexSearcher.java:85)
at org.apache.jackrabbit.core.query.lucene.SearchIndex.executeQuery(SearchIndex.java:791)
at org.hippoecm.repository.query.lucene.HippoQueryResult.executeQuery(HippoQueryResult.java:72)
at org.apache.jackrabbit.core.query.lucene.QueryResultImpl.getResults(QueryResultImpl.java:275)
at org.hippoecm.repository.query.lucene.HippoQueryResult.<init>(HippoQueryResult.java:64)
at org.hippoecm.repository.query.lucene.ServicingSearchIndex$2.execute(ServicingSearchIndex.java:152)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:131)
at org.apache.jackrabbit.core.query.QueryImpl$1.perform(QueryImpl.java:128)
at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
at org.apache.jackrabbit.core.query.QueryImpl.execute(QueryImpl.java:127)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:379)
at org.hippoecm.repository.impl.QueryDecorator.execute(QueryDecorator.java:92)
at org.hippoecm.repository.decorating.checked.QueryDecorator.execute(QueryDecorator.java:62)
at org.hippoecm.frontend.plugins.reporting.ReportModel.load(ReportModel.java:135)
at org.hippoecm.frontend.plugins.reporting.ReportModel.iterator(ReportModel.java:70)
at org.hippoecm.frontend.plugins.cms.dashboard.current.CurrentActivityPlugin$CurrentActivityView.getItemModels(CurrentActivityPlugin.java:76)
at org.apache.wicket.markup.repeater.RefreshingView.onPopulate(RefreshingView.java:94)