TicTacToeData Op Code Error

Hi - I am trying to get the TicTacToe dl4j example working. Since I don’t have the data file example, I’m using TicTacToeData (part of the example package) to generate the data file. It is failing with an op code exception when trying to put an INDArray object into a hashmap - (apparently INDArray does not support the java object hashcode method?). This is the stack trace:
java.lang.RuntimeException: Op [hashcode] execution failed
at org.nd4j.linalg.cpu.nativecpu.ops.NativeOpExecutioner.exec(NativeOpExecutioner.java:1710)
at org.nd4j.linalg.factory.Nd4j.exec(Nd4j.java:6606)
at org.nd4j.linalg.api.ndarray.BaseNDArray.hashCode(BaseNDArray.java:4552)
at java.base/java.util.HashMap.hash(HashMap.java:338)
at java.base/java.util.HashMap.put(HashMap.java:610)
at org.deeplearning4j.examples.tictactoe.TicTacToeData.generateGameStatesAndRewardToIt(TicTacToeData.java:199)

Appreciate any help.

@mrenzi I answered our question on data. Is there more to the stack trace?