java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.hazelcast.concurrent.lock.LockResourceImpl.canAcquireLock(LockResourceImpl.java:166)
at com.hazelcast.concurrent.lock.LockStoreImpl.canAcquireLock(LockStoreImpl.java:159)
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.waitingNeeded(OperationRunnerImpl.java:235)
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:177)
at com.hazelcast.spi.impl.operationexecutor.impl.OperationExecutorImpl.run(OperationExecutorImpl.java:373)
at com.hazelcast.spi.impl.operationexecutor.impl.OperationExecutorImpl.runOrExecute(OperationExecutorImpl.java:400)
at com.hazelcast.spi.impl.operationservice.impl.Invocation.doInvokeLocal(Invocation.java:283)
at com.hazelcast.spi.impl.operationservice.impl.Invocation.doInvoke(Invocation.java:268)
at com.hazelcast.spi.impl.operationservice.impl.Invocation.invoke0(Invocation.java:232)
at com.hazelcast.spi.impl.operationservice.impl.Invocation.invoke(Invocation.java:207)
at com.hazelcast.spi.impl.operationservice.impl.InvocationBuilderImpl.invoke(InvocationBuilderImpl.java:59)
at com.hazelcast.client.impl.protocol.task.AbstractPartitionMessageTask.processMessage(AbstractPartitionMessageTask.java:64)
at com.hazelcast.client.impl.protocol.task.AbstractMessageTask.initializeAndProcessMessage(AbstractMessageTask.java:119)
at com.hazelcast.client.impl.protocol.task.AbstractMessageTask.run(AbstractMessageTask.java:99)
at com.hazelcast.spi.impl.operationservice.impl.OperationRunnerImpl.run(OperationRunnerImpl.java:137)
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.process(OperationThread.java:127)
at com.hazelcast.spi.impl.operationexecutor.impl.OperationThread.run(OperationThread.java:102)

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