ValueError: node array from the pickle has an incompatible dtype

[wuzhihui3723]

ValueError Traceback (most recent call last)
Cell In[5], line 2
1 quantizer = qbiome.quantizer.Quantizer(num_levels=6)
----> 2 quantizer.load_quantizer_states("forecast_quantizer.pkl")

File ~/miniconda3/lib/python3.12/site-packages/qbiome/quantizer.py:80, in Quantizer.load_quantizer_states(self, in_fname)
74 """Load in self.column_names, self.variable_bin_map, self.random_forest_dict from file
75
76 Args:
77 in_fname (str): input file name
78 """
79 with open(in_fname, 'rb') as f:
---> 80 states = pickle.load(f)
81 self.column_names = states['column_names']
82 self.subject_id_column = states['subject_id_column']

File _tree.pyx:867, in sklearn.tree._tree.Tree.setstate()

File _tree.pyx:1573, in sklearn.tree._tree._check_node_ndarray()

ValueError: node array from the pickle has an incompatible dtype:

• expected: {'names': ['left_child', 'right_child', 'feature', 'threshold', 'impurity', 'n_node_samples', 'weighted_n_node_samples', 'missing_go_to_left'], 'formats': ['<i8', '<i8', '<i8', '<f8', '<f8', '<i8', '<f8', 'u1'], 'offsets': [0, 8, 16, 24, 32, 40, 48, 56], 'itemsize': 64}
• got : [('left_child', '<i8'), ('right_child', '<i8'), ('feature', '<i8'), ('threshold', '<f8'), ('impurity', '<f8'), ('n_node_samples', '<i8'), ('weighted_n_node_samples', '<f8')]