Error running the example notebook

[HadiKutabi]

Hello,

Im trying to run the code in "dswizard/scripts/example.ipynb".

I'm getting an error right after I run:

master = Master(
    ds=ds,
    working_directory=os.path.join(log_dir, str(task)),
    n_workers=2,
    model='/home/jovyan/dswizard/assets/rf_complete.pkl',
    wallclock_limit=wallclock_limit,
    cutoff=cutoff
)
pipeline, run_history, ensemble = master.optimize()

Error:

/home/hadi/Desktop/diwizard/venv/bin/python /home/hadi/Desktop/diwizard/1_optimize.py 
/home/hadi/Desktop/diwizard/venv/lib/python3.8/site-packages/dswizard/optimizers/config_generators/__init__.py:9: UserWarning: SMAC not installed
  warnings.warn("SMAC not installed")
2023-01-29 13:25:03,555 INFO     root            MainThread Processing task 146606
2023-01-29 13:25:03,621 INFO     openml.config   MainThread No config file found at /home/hadi/.config/openml/config, using default configuration.
2023-01-29 13:25:03,677 INFO     openml.datasets.dataset MainThread pickle load data higgs
2023-01-29 13:25:03,718 DEBUG    Meta-Features   MainThread Calculating MF
2023-01-29 13:25:07,741 DEBUG    Meta-Features   MainThread Calculating MF
2023-01-29 13:25:09,500 INFO     Structure       Thread-5   Loading transfer model from rf_complete.pkl
2023-01-29 13:25:10,298 INFO     Worker          MainThread Running on hadi with pid 32166
2023-01-29 13:25:10,299 INFO     Worker          MainThread Running on hadi with pid 32166
2023-01-29 13:25:10,321 INFO     Master          MainThread starting run at 2023-01-29 13:25:10. Configuration:
	wallclock_limit: 60
	cutoff: 10
	pre_sample: False
2023-01-29 13:25:10,321 DEBUG    Dispatcher      MainThread Waiting for all workers to finish current work. 0 / 2 busy...
2023-01-29 13:25:10,321 INFO     Master          MainThread Starting repetition 0
2023-01-29 13:25:10,370 DEBUG    Dispatcher      MainThread Processing job (0, 0, None)
2023-01-29 13:25:10,397 DEBUG    Structure       NoDaemonPoolWorker-4 	Selecting Root
2023-01-29 13:25:10,413 DEBUG    Structure       NoDaemonPoolWorker-4 	Expanding with dswizard.components.feature_preprocessing.variance_threshold.VarianceThresholdComponent. Option 1/10
2023-01-29 13:25:10,433 INFO     Worker          NoDaemonPoolWorker-4 start transforming job (0, 0, '0_variance_threshold')
2023-01-29 13:25:10,621 DEBUG    Meta-Features   NoDaemonPoolWorker-4 Calculating MF
2023-01-29 13:25:11,358 DEBUG    Dispatcher      MainThread Processing job (0, 1, None)
2023-01-29 13:25:11,388 DEBUG    Structure       NoDaemonPoolWorker-5 	Selecting Root
2023-01-29 13:25:11,401 DEBUG    Structure       NoDaemonPoolWorker-5 	Expanding with dswizard.components.data_preprocessing.standard_scaler.StandardScalerComponent. Option 2/10
2023-01-29 13:25:11,421 INFO     Worker          NoDaemonPoolWorker-5 start transforming job (0, 1, '0_standard_scaler')
2023-01-29 13:25:11,559 DEBUG    Meta-Features   NoDaemonPoolWorker-5 Calculating MF
2023-01-29 13:25:12,323 DEBUG    Dispatcher      MainThread waiting for next worker to be available
2023-01-29 13:25:14,938 ERROR    Dispatcher      MainThread Unhandled exception during job processing: Unknown Distance Metric: wminkowski
Traceback (most recent call last):
  File "/home/hadi/Desktop/diwizard/venv/lib/python3.8/site-packages/dswizard/core/dispatcher.py", line 100, in _process_job
    cs = self.structure_generator.fill_candidate(job.cs, job.ds, cutoff=job.cutoff, worker=worker)
  File "<string>", line 2, in fill_candidate
  File "/usr/lib/python3.8/multiprocessing/managers.py", line 850, in _callmethod
    raise convert_to_error(kind, result)
ValueError: Unknown Distance Metric: wminkowski
2023-01-29 13:25:14,944 DEBUG    Master          Thread-3   Structure callback (0, 0, None)
2023-01-29 13:25:14,944 WARNING  Master          Thread-3   Encountered job without a structure. Using simple best-practice pipeline.
2023-01-29 13:25:14,947 CRITICAL Master          Thread-3   Encountered unhandled exception Unknown Distance Metric: wminkowski. This should never happen!
Traceback (most recent call last):
  File "/home/hadi/Desktop/diwizard/venv/lib/python3.8/site-packages/dswizard/core/master.py", line 388, in _structure_callback
    cs = FixedStructure(steps=[('ohe', OneHotEncoderComponent()),
  File "/home/hadi/Desktop/diwizard/venv/lib/python3.8/site-packages/dswizard/optimizers/structure_generators/fixed.py", line 20, in fill_candidate
    key = self.cfg_cache.get_config_key(configspace=task.get_hyperparameter_search_space(),
  File "<string>", line 2, in get_config_key
  File "/usr/lib/python3.8/multiprocessing/managers.py", line 850, in _callmethod
    raise convert_to_error(kind, result)
ValueError: Unknown Distance Metric: wminkowski
2023-01-29 13:25:14,982 DEBUG    Dispatcher      MainThread Processing job (0, 2, None)
2023-01-29 13:25:15,024 DEBUG    Structure       NoDaemonPoolWorker-4 	Selecting Root
2023-01-29 13:25:15,034 DEBUG    Structure       NoDaemonPoolWorker-4 	Expanding with dswizard.components.data_preprocessing.knn_imputer.KNNImputerComponent. Option 3/10
2023-01-29 13:25:15,054 INFO     Worker          NoDaemonPoolWorker-4 start transforming job (0, 2, '0_knn_imputer')
2023-01-29 13:25:15,388 DEBUG    Meta-Features   NoDaemonPoolWorker-4 Calculating MF
2023-01-29 13:25:15,949 DEBUG    Dispatcher      MainThread waiting for next worker to be available
2023-01-29 13:25:16,029 ERROR    Dispatcher      MainThread Unhandled exception during job processing: Unknown Distance Metric: wminkowski

Can somebody assist me in understanding what is happening?