#6 exception thrown when creating snippet on nb11

[Alex]

fails to create snippet on nb11

java.lang.NullPointerException
at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:103)
at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:79)
at sk.arsi.nb.help.server.lucene.LuceneManager$DescriptionLocalStore.<init>(LuceneManager.java:216)
at sk.arsi.nb.help.server.lucene.LuceneManager.findDescriptionLocalStore(LuceneManager.java:52)
[catch] at sk.arsi.nb.help.server.lucene.LuceneManager.findDescription(LuceneManager.java:254)
at sk.arsi.nb.help.server.local.LocalTransferManager.findFullTextDescription(LocalTransferManager.java:155)
at sk.arsi.nb.help.module.client.NbDocClient.sendAndReceive(NbDocClient.java:156)
at sk.arsi.nb.help.module.client.NbDocClient.getByFullTextDescription(NbDocClient.java:230)
at sk.arsi.nb.help.module.actions.CreateHelpPanel.findDuplicateDescription(CreateHelpPanel.java:201)
at sk.arsi.nb.help.module.actions.CreateHelpPanel.lambda$updateDescriptionDuplicates$1(CreateHelpPanel.java:176)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:844)</init>