chablis8

I tried to retrieve the shap values from a Light GBM linear tree model but unsuccessful ``` bst = lgb.LGBMRegressor(categorical_feature=c,linear_trees=True, **gbm_best_param).fit(X, y) exp = shap.Explainer(bst) shap_values = exp.shap_values(X, check_additivity=False) shap.summary_plot(shap_values,...