AttributeError: 'Delaunay' object has no attribute 'vertices'

[HamidrezaZarrabi]

Issue

Hi,
When I run python train.py, training process is started but I face with the following AttrbuteError:

It says: AttributeError: 'Delaunay' object has no attribute 'vertices'

what's the problem?
Thank you for taking me your time. I hope to hear the solution from you.

Additional information

Extracted fg_mask.zip into directory fg_mask and also mvtec_anomaly_detection.tar.xz into directory mvtec_anomaly_detection.
scikit-learn version: 1.3.2
Chosen parameters as following:
data_path = "/mvtec_anomaly_detection/"
anomaly_source_path = "/fg_mask/"
class_name = 'zipper'
num_anomalies = 8