• "numpy.dtype",
• "sklearn.tree._classes.DecisionTreeRegressor",
• "sklearn.dummy.DummyRegressor",
• "sklearn.ensemble._gb.GradientBoostingRegressor",
• "sklearn.compose._column_transformer.ColumnTransformer",
• "numpy.core.multiarray._reconstruct",
• "sklearn.compose._column_transformer.make_column_selector",
• "numpy.random._pickle.__randomstate_ctor",
• "sklearn.pipeline.Pipeline",
• "numpy.float64",
• "sklearn.ensemble._gb_losses.LeastSquaresError",
• "sklearn.preprocessing._encoders.OneHotEncoder",
• "numpy.ndarray",
• "sklearn.tree._tree.Tree",
• "builtins.slice"

How to fix it?