main.py None type return

[kmolLin]

My environment:

Intel i7H 10th python 3.8.5

Question:

The function return None type error. when use command "python main.py -t KL520-cam_isi_async_yolo"

[YellowElephantHive]

I'd ever encountered this situation. However, while I installed "opencv-python", everything was okay! Thus, I guess that some modules were not installed. You might check all the requirement modules.