TypeError: 'NoneType' object is not subscriptable

[charmin161]

File "demo.py", line 52, in
main()
File "demo.py", line 26, in main
result = det.feedCap(im)
File "D:\vehicleCount\yolox_deepsort_reply\yolox-deepsort-main\BaseDetector.py", line 33, in feedCap
im, faces, face_bboxes = update_tracker(self, im)
File "D:\vehicleCount\yolox_deepsort_reply\yolox-deepsort-main\tracker.py", line 40, in update_tracker
_, bboxes = target_detector.detect(image)
File "D:\vehicleCount\yolox_deepsort_reply\yolox-deepsort-main\AIDetector_pytorch.py", line 109, in detect
boxes1 = outputs[:, 0:4]
TypeError: 'NoneType' object is not subscriptable