java.lang.NullPointerException
   at org.apache.maven.index.context.DefaultIndexingContext.acquireIndexSearcher(DefaultIndexingContext.java:498)
   at org.apache.maven.index.context.NexusIndexMultiReader.acquire(NexusIndexMultiReader.java:56)
   at org.apache.maven.index.context.NexusIndexMultiSearcher.<init>(NexusIndexMultiSearcher.java:32)
   at org.apache.maven.index.DefaultSearchEngine.searchIteratorPaged(DefaultSearchEngine.java:276)
   at org.apache.maven.index.DefaultSearchEngine.searchIteratorPaged(DefaultSearchEngine.java:257)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.repeatedPagedSearch(NexusRepositoryIndexerImpl.java:432)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.access$800(NexusRepositoryIndexerImpl.java:142)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$19.run(NexusRepositoryIndexerImpl.java:1164)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$7.run(NexusRepositoryIndexerImpl.java:915)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$7.run(NexusRepositoryIndexerImpl.java:896)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.writeAccess(DefaultMutexImplementation.java:293)
   at org.openide.util.Mutex.writeAccess(Mutex.java:271)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.iterate(NexusRepositoryIndexerImpl.java:896)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.findVersionsByClass(NexusRepositoryIndexerImpl.java:1151)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl.access$1900(NexusRepositoryIndexerImpl.java:142)
   at org.netbeans.modules.maven.indexer.NexusRepositoryIndexerImpl$18.run(NexusRepositoryIndexerImpl.java:1142)
   at org.netbeans.modules.maven.indexer.api.RepositoryQueries$Result.waitForSkipped(RepositoryQueries.java:110)
   at org.netbeans.modules.maven.hints.ui.SearchDependencyUI$Tsk.run(SearchDependencyUI.java:217)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1481)
   at org.netbeans.modules.maven.hints.ui.SearchDependencyUI.load(SearchDependencyUI.java:271)
   at org.netbeans.modules.maven.hints.ui.SearchDependencyUI.<init>(SearchDependencyUI.java:153)
   at org.netbeans.modules.maven.hints.errors.SearchClassDependencyInRepo$MavenSearchFix.implement(SearchClassDependencyInRepo.java:504)
   at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:837)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1440)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2055)