net.razorvine.pickle.InvalidOpcodeException: invalid pickle opcode: 120

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net.razorvine.pickle.InvalidOpcodeException: invalid pickle opcode: 120
at net.razorvine.pickle.Unpickler.dispatch(Unpickler.java:330)
at org.jpmml.sklearn.PickleUtil.unpickle(PickleUtil.java:230)
at org.jpmml.sklearn.Main.run(Main.java:126)
at org.jpmml.sklearn.Main.main(Main.java:107)

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