Cannot run demo program for Darwin-OP

Hello everyone. I have a question regarding my Darwin-OP. It seems that I cannot run the demo program after turning it on. I’ve tried running it manually by using the terminal but it keeps showing error : Cannot identify ‘/dev/vedio0’: 2, No such file or directory. This problem happens after I tried Clonezilla Recovery. How can I fix this issue? Thanks

Check back the demo program file and double check the wiring on camera

That means it cannot find the head camera. Check its cable. Also try use another program like Cheese to view this camera.