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java.lang.ArithmeticException: / by zero at ml.dmlc.xgboost4j.java.Booster.predict(Booster.java:230) at ml.dmlc.xgboost4j.java.Booster.predict(Booster.java:285) at ml.dmlc.xgboost4j.scala.Booster.predict(Booster.scala:126) at ml.dmlc.xgboost4j.scala.example.spark.SparkWithRDD1$.main(SparkWithRDD1.scala:61) at ml.dmlc.xgboost4j.scala.example.spark.SparkWithRDD1.main(SparkWithRDD1.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)