Run execute detection/retinaface/test.py

I have problem running test.py
[32, 16, 8] {'32': {'SCALES': (32, 16), 'BASE_SIZE': 16, 'RATIOS': (1.0,), 'ALLOWED_BORDER': 9999}, '16': {'SCALES': (8, 4), 'BASE_SIZE': 16,
'RATIOS': (1.0,), 'ALLOWED_BORDER': 9999}, '8': {'SCALES': (2, 1), 'BASE_SIZE': 16, 'RATIOS': (1.0,), 'ALLOWED_BORDER': 9999}}
[18:30:08] C:\Jenkins\workspace\mxnet-tag\mxnet\src\nnvm\legacy_json_util.cc:209: Loading symbol saved by previous version v1.3.0. Attempting
to upgrade...
[18:30:08] C:\Jenkins\workspace\mxnet-tag\mxnet\src\nnvm\legacy_json_util.cc:217: Symbol successfully upgraded!
means [0. 0. 0.]
use_landmarks True
cascade 0
sym size: 9
Traceback (most recent call last):
File "e:/DataTraining/insightface-master/insightface-master/detection/RetinaFace/test.py", line 19, in
print(img.shape)
AttributeError: 'NoneType' object has no attribute 'shape'
------
Does this error mean my image is not valid? how can i fix it?.
thank you