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java.lang.NullPointerException at org.neo4j.kernel.PrimitiveTypeFetcher$1.getId(PrimitiveTypeFetcher.java:36) at org.neo4j.kernel.GloballyUnique.check(GloballyUnique.java:39) at org.neo4j.kernel.AbstractUniquenessFilter.checkFirst(AbstractUniquenessFilter.java:36) at org.neo4j.kernel.impl.traversal.TraverserIterator.isUniqueFirst(TraverserIterator.java:81) at org.neo4j.kernel.impl.traversal.StartNodeTraversalBranch.<init>(StartNodeTraversalBranch.java:39) at org.neo4j.kernel.impl.traversal.AsOneStartBranch.toBranches(AsOneStartBranch.java:66) at org.neo4j.kernel.impl.traversal.AsOneStartBranch.<init>(AsOneStartBranch.java:59) at org.neo4j.kernel.impl.traversal.TraverserIterator.<init>(TraverserIterator.java:45) at org.neo4j.kernel.impl.traversal.TraverserImpl.instantiateIterator(TraverserImpl.java:40) at org.neo4j.kernel.impl.traversal.AbstractTraverser.iterator(AbstractTraverser.java:83) at org.neo4j.helpers.collection.IterableWrapper.iterator(IterableWrapper.java:44) at org.opentree.taxonomy.TaxonomySynthesizer.makeContexts(TaxonomySynthesizer.java:583) at org.opentree.taxonomy.MainRunner.taxonomyQueryParser(MainRunner.java:360) at org.opentree.taxonomy.MainRunner.main(MainRunner.java:653)