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

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via Google Groups by Thushan Ganegedara, 5 months ago
java.lang.NullPointerException:
at hex.ScoreKeeper.fillFrom(ScoreKeeper.java:42)
at hex.tree.SharedTree.doScoringAndSaveModel(SharedTree.java:415)
at hex.tree.gbm.GBM.access$800(GBM.java:20)
at hex.tree.gbm.GBM$GBMDriver.buildModel(GBM.java:138)
at hex.tree.SharedTree$Driver.compute2(SharedTree.java:195)
at water.H2O$H2OCountedCompleter.compute(H2O.java:698)
at jsr166y.CountedCompleter.exec(CountedCompleter.java:429)
at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)
at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)
at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)
at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

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