ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

[dongfeicui]

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Describe the bug
I get the same error in both FaceBoxes/FaceBoxes.py line 133 and FaceBoxes/FaceBoxes_ONNX.py line 138.
The program cannot determine the value. Because the variable b is two-dimensional and cannot be compared with a scalar variable vis_thres.

To Reproduce
Case 1
python3 demo.py -f examples/inputs/emma.jpg -o 3d.
Case2
python3 demo_video.py -f examples/inputs/videos/214.avi -o 3d

Expected behavior
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()
Screenshots

Platform:

• Windows

Additional context
Add any other context about the problem here.
I modified the code as the follow:
In FaceBoxes/FaceBoxes.py line 133 I change for b in dets: => for b in dets.squeeze(0):
In FaceBoxes/FaceBoxes_ONNX.py line 138 I change for b in dets: => for b in dets.squeeze(0):
If used in older numpy, please use np.squeeze(dets, 0)