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LabelEncoder + Imputer + LabelBinarizer error

I'm having an error while using a LabelEncoder + Imputer + LabelBinarizer in a mapper, as a LabelEncoder output is a vector of (n_samples,) so Imputer, that calls ...
GitHub

java.lang.IllegalArgumentException: Attribute 'xgboost.sklearn.XGBClassifier._le' has an unsupported value (Python class sklearn.preprocessing._label.LabelEncoder)

We are using this package for a long time at production with python 2.7 with the following code: ai-model-infra==0.1 awscli==1.16.300 beautifulsoup4==4.7.1 boto==2.49.0 boto3==1.10.36 ...