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jpmml / jpmml-lightgbm

Java library and command-line application for converting LightGBM models to PMML
GNU Affero General Public License v3.0
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Error with NullPointerException #45

Closed lyliu closed 3 years ago

lyliu commented 3 years ago

Hi, When I run "java -jar target/jpmml-lightgbm-executable-1.3-SNAPSHOT.jar --lgbm-input model.txt --pmml-output lightgbm.pmml", there was an error with the following information:

Exception in thread "main" java.lang.NullPointerException
    at org.jpmml.lightgbm.LightGBMUtil.parseStringArray(LightGBMUtil.java:100)
    at org.jpmml.lightgbm.LightGBMUtil.parseIntArray(LightGBMUtil.java:111)
    at org.jpmml.lightgbm.Section.getIntArray(Section.java:62)
    at org.jpmml.lightgbm.Tree.load(Tree.java:78)
    at org.jpmml.lightgbm.GBDT.load(GBDT.java:119)
    at org.jpmml.lightgbm.LightGBMUtil.loadGBDT(LightGBMUtil.java:53)
    at org.jpmml.lightgbm.LightGBMUtil.loadGBDT(LightGBMUtil.java:45)
    at org.jpmml.lightgbm.Main.run(Main.java:141)
    at org.jpmml.lightgbm.Main.main(Main.java:134)

so, how to solve it?

vruusmann commented 3 years ago

Duplicate of #41

how to solve it?

You solve it by upgrading to the latest version.