Some wrong happen when I run prep.py.

[xwt11]

1. The specific errors are as follows:
   D:\Anaconda\envs\pytorch\python.exe E:\Project\denoseing\WGAN-VGG-master\WGAN-VGG-master\prep.py
   D:\Anaconda\envs\pytorch\lib\site-packages\pydicom\filereader.py:353: UserWarning: Expected implicit VR, but found explicit VR - using explicit VR for reading
   warnings.warn(msg + f" - using {found_vr} VR for reading", UserWarning)
   Traceback (most recent call last):
   File "E:\Project\denoseing\WGAN-VGG-master\WGAN-VGG-master\prep.py", line 92, in
   save_dataset(args)
   File "E:\Project\denoseing\WGAN-VGG-master\WGAN-VGG-master\prep.py", line 21, in save_dataset
   full_pixels = get_pixels_hu(load_scan(path_))
   File "E:\Project\denoseing\WGAN-VGG-master\WGAN-VGG-master\prep.py", line 39, in load_scan
   slices.sort(key=lambda x: float(x.ImagePositionPatient[2]))
   File "E:\Project\denoseing\WGAN-VGG-master\WGAN-VGG-master\prep.py", line 39, in
   slices.sort(key=lambda x: float(x.ImagePositionPatient[2]))
   File "D:\Anaconda\envs\pytorch\lib\site-packages\pydicom\dataset.py", line 834, in getattr
   return object.getattribute(self, name)
   AttributeError: 'FileDataset' object has no attribute 'ImagePositionPatient'

Process finished with exit code 1

2. My environment configuration
   windows
   pydicom =2.3.0
   python=3.9
   pytorch=1.10.0
   numpy = 1.23.3