Error in data preprocessing

[root4399]

Hello,
I am very impressed by your work, and am trying to start my anomaly detection research based off of your work.

The first thing I am trying to do is to reproduce the results for the SWaT dataset given in Table 2.
I followed the exact step that you provided in scripts/readme.md for SWaT preprocessing and error occurred：

Traceback (most recent call last):
File "e:\backup\GDN-main\scripts\process_swat.py", line 101, in
main()
File "e:\backup\GDN-main\scripts\process_swat.py", line 78, in main
d_test_x, d_test_labels = downsample(test.values, test_labels, 10)
File "e:\backup\GDN-main\scripts\process_swat.py", line 32, in downsample
d_labels = np.round(np.max(d_labels, axis=1))
File "<array_function internals>", line 5, in amax
File "E:\anaconda3\lib\site-packages\numpy\core\fromnumeric.py", line 2667, in amax
return _wrapreduction(a, np.maximum, 'max', axis, None, out,
File "E:\anaconda3\lib\site-packages\numpy\core\fromnumeric.py", line 90, in _wrapreduction
return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
TypeError: '>=' not supported between instances of 'str' and 'int'

Thank you very much.