runtime error

Exit code: 1. Reason: [ WARN:[email protected]] global cap_v4l.cpp:999 open VIDEOIO(V4L2:/dev/video0): can't open camera by index [ERROR:[email protected]] global obsensor_uvc_stream_channel.cpp:158 getStreamChannelGroup Camera index out of range Traceback (most recent call last): File "/home/user/app/app.py", line 48, in <module> gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) cv2.error: OpenCV(4.10.0) /io/opencv/modules/imgproc/src/color.cpp:196: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

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