java.util.concurrent.ExecutionException: java.lang.NullPointerException

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javax.ejb.EJBException: java.lang.NullPointerException
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at com.mapr.synth.samplers.NameSampler.sample(NameSampler.java:80)
at com.mapr.synth.samplers.NameSampler.sample(NameSampler.java:24)
at com.mapr.synth.samplers.SchemaSampler.sample(SchemaSampler.java:69)
at com.mapr.synth.Synth$ReportingWorker.generateFile(Synth.java:207)
at com.mapr.synth.Synth$ReportingWorker.call(Synth.java:171)
at com.mapr.synth.Synth$ReportingWorker.call(Synth.java:125)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

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