InacessibleObjectException

Hello everyone,

I have the following code:
double[] evaluateGainRatio(Instances data) throws Exception{
        double[] gainRatios = new double[data.numAttributes()];
        for (int i = 0; i < data.numAttributes(); i++) {
            GainRatioAttributeEval gainRatioAttributeEval = new GainRatioAttributeEval();
            gainRatioAttributeEval.buildEvaluator(data);
            gainRatios[i] = gainRatioAttributeEval.evaluateAttribute(i);
        }
        return gainRatios;
    }

and the buildEvaluator method, throws an InaccessibleObjectException!

Could you please help?

Thank you for your time,

Spyros Halkidis
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