RuntimeError: No available devices

[codewithleo1103]

I installed requirements and trying run python3 demo.py. Then show:

Palm detection blob : /home/ubuntu/Desktop/research/hand/depthai_hand_tracker/models/palm_detection_sh4.blob
Landmark blob : /home/ubuntu/Desktop/research/hand/depthai_hand_tracker/models/hand_landmark_lite_sh4.blob
Traceback (most recent call last):
File "./demo.py", line 59, in
tracker = HandTracker(
File "/home/ubuntu/Desktop/research/hand/depthai_hand_tracker/HandTracker.py", line 130, in init
self.device = dai.Device()
RuntimeError: No available devices

Please help me solve this problem!!!

[DBraun]

This error is probably unrelated to the hand tracking code. One possible explanation is that your camera isn't connected correctly. Consider following the steps here (https://docs.luxonis.com/en/latest/pages/tutorials/first_steps/) if you haven't already.