No module named 'estimators_demo_utils'

[boyue2999]

----> 1 from estimators_demo_utils import plot_performance_metrics
3 # Obtain survival probabilities for test set
4 predictions_te = model.predict_survival(x_te, times)

ModuleNotFoundError: No module named 'estimators_demo_utils'

[boyue2999]

and
TypeError: can't convert np.ndarray of type numpy.object_.

AttributeError: 'RandomSurvivalForest' object has no attribute 'event_times_'