NPE when querying

java.util.concurrent.CompletionException: org.hibernate.search.exception.SearchException: Exception while searching locally
    at java.util.concurrent.CompletableFuture.encodeThrowable (CompletableFuture.java:314)
    at java.util.concurrent.CompletableFuture.completeThrowable (CompletableFuture.java:319)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run (CompletableFuture.java:1766)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1130)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:630)
    at java.lang.Thread.run (Thread.java:832)
Caused by: org.hibernate.search.exception.SearchException: Exception while searching locally
    at org.infinispan.query.clustered.ClusteredQueryInvoker.broadcast (ClusteredQueryInvoker.java:114)
    at org.infinispan.query.clustered.ClusteredCacheQueryImpl.broadcastQuery (ClusteredCacheQueryImpl.java:113)
    at org.infinispan.query.clustered.ClusteredCacheQueryImpl.iterator (ClusteredCacheQueryImpl.java:84)
    at org.infinispan.query.impl.CacheQueryImpl.iterator (CacheQueryImpl.java:144)
    at org.infinispan.query.dsl.embedded.impl.EmbeddedLuceneQuery.iterator (EmbeddedLuceneQuery.java:93)
    at org.infinispan.query.core.impl.HybridQuery.getBaseIterator (HybridQuery.java:48)
    at org.infinispan.query.core.impl.HybridQuery.getInternalIterator (HybridQuery.java:44)
    at org.infinispan.query.core.impl.BaseEmbeddedQuery.listInternal (BaseEmbeddedQuery.java:84)
    at org.infinispan.query.core.impl.BaseEmbeddedQuery.execute (BaseEmbeddedQuery.java:65)
    at org.infinispan.query.core.impl.DelegatingQuery.execute (DelegatingQuery.java:111)
    at org.infinispan.query.QueryPerf$TimeBoundQueryNode.executeTask (QueryPerf.java:444)
    at org.infinispan.query.QueryPerf$TaskNode.lambda$run$1 (QueryPerf.java:306)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run (CompletableFuture.java:1764)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1130)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:630)
    at java.lang.Thread.run (Thread.java:832)
Caused by: java.util.concurrent.ExecutionException: org.hibernate.search.exception.SearchException: java.lang.NullPointerException
    at java.util.concurrent.FutureTask.report (FutureTask.java:122)
    at java.util.concurrent.FutureTask.get (FutureTask.java:191)
    at org.infinispan.query.clustered.ClusteredQueryInvoker.broadcast (ClusteredQueryInvoker.java:104)
    at org.infinispan.query.clustered.ClusteredCacheQueryImpl.broadcastQuery (ClusteredCacheQueryImpl.java:113)
    at org.infinispan.query.clustered.ClusteredCacheQueryImpl.iterator (ClusteredCacheQueryImpl.java:84)
    at org.infinispan.query.impl.CacheQueryImpl.iterator (CacheQueryImpl.java:144)
    at org.infinispan.query.dsl.embedded.impl.EmbeddedLuceneQuery.iterator (EmbeddedLuceneQuery.java:93)
    at org.infinispan.query.core.impl.HybridQuery.getBaseIterator (HybridQuery.java:48)
    at org.infinispan.query.core.impl.HybridQuery.getInternalIterator (HybridQuery.java:44)
    at org.infinispan.query.core.impl.BaseEmbeddedQuery.listInternal (BaseEmbeddedQuery.java:84)
    at org.infinispan.query.core.impl.BaseEmbeddedQuery.execute (BaseEmbeddedQuery.java:65)
    at org.infinispan.query.core.impl.DelegatingQuery.execute (DelegatingQuery.java:111)
    at org.infinispan.query.QueryPerf$TimeBoundQueryNode.executeTask (QueryPerf.java:444)
    at org.infinispan.query.QueryPerf$TaskNode.lambda$run$1 (QueryPerf.java:306)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run (CompletableFuture.java:1764)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1130)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:630)
    at java.lang.Thread.run (Thread.java:832)
Caused by: org.hibernate.search.exception.SearchException: java.lang.NullPointerException
    at org.infinispan.query.clustered.ClusteredQueryInvoker.lambda$localInvoke$4 (ClusteredQueryInvoker.java:124)
    at java.util.concurrent.FutureTask.run (FutureTask.java:264)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1130)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:630)
    at java.lang.Thread.run (Thread.java:832)
Caused by: java.lang.NullPointerException
    at org.hibernate.search.query.engine.impl.LuceneHSQuery.queryResultSize (LuceneHSQuery.java:239)
    at org.infinispan.query.clustered.commandworkers.CQCreateEagerQuery.perform (CQCreateEagerQuery.java:27)
    at org.infinispan.query.clustered.commandworkers.CQCommandType.perform (CQCommandType.java:43)
    at org.infinispan.query.clustered.ClusteredQueryOperation.perform (ClusteredQueryOperation.java:74)
    at org.infinispan.query.clustered.SegmentsClusteredQueryCommand.perform (SegmentsClusteredQueryCommand.java:45)
    at org.infinispan.query.clustered.ClusteredQueryInvoker.lambda$localInvoke$4 (ClusteredQueryInvoker.java:122)
    at java.util.concurrent.FutureTask.run (FutureTask.java:264)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1130)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:630)
    at java.lang.Thread.run (Thread.java:832)