java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at sun.nio.ch.Util.atBugLevel(Util.java:448)
at sun.nio.ch.SelectorImpl.(SelectorImpl.java:40)
at sun.nio.ch.EPollSelectorImpl.(EPollSelectorImpl.java:47)
at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
at java.nio.channels.Selector.open(Selector.java:209)
at com.hazelcast.nio.tcp.nonblocking.NonBlockingIOThread.newSelector(NonBlockingIOThread.java:119)
at com.hazelcast.nio.tcp.nonblocking.NonBlockingIOThread.(NonBlockingIOThread.java:100)
at com.hazelcast.nio.tcp.nonblocking.NonBlockingIOThreadingModel.start(NonBlockingIOThreadingModel.java:138)
at com.hazelcast.nio.tcp.TcpIpConnectionManager.start(TcpIpConnectionManager.java:478)
at com.hazelcast.instance.Node.start(Node.java:344)
at com.hazelcast.instance.HazelcastInstanceImpl.(HazelcastInstanceImpl.java:130)
at com.hazelcast.instance.HazelcastInstanceFactory.constructHazelcastInstance(HazelcastInstanceFactory.java:218)
at com.hazelcast.instance.HazelcastInstanceFactory.newHazelcastInstance(HazelcastInstanceFactory.java:176)
at com.hazelcast.spi.discovery.DiscoverySpiTest.testSPIAwareMemberGroupFactoryCreateMemberGroups(DiscoverySpiTest.java:284)

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