AttributeError: 'NoneType' object has no attribute 'shape'

[Vincent630]

hi,i got this issus when i run the demo.py ,is that because of the camera problem ??? i will appricate it if you can help me .thank you so much
[Camera Server] Camera is initializing ...
VIDEOIO ERROR: V4L: can't open camera by index 0
Traceback (most recent call last):
File "apps/demo.py", line 68, in
demo.run()
File "/home/wenguang.wang/下载/tf-insightface/models/camera_server.py", line 40, in run
self.processs(frame)
File "apps/demo.py", line 30, in processs
self.face_tracker.process(frame)
File "/home/wenguang.wang/下载/tf-insightface/models/face_track_server.py", line 40, in process
self.cam_h, self.cam_w, _ = frame.shape
AttributeError: 'NoneType' object has no attribute 'shape'

[mengyaogong]

Did you connect the camera?