CSI camera not being detected

Hey guys! We are in the process of mounting our csi camera and we keep getting these errors when we try and run the code. I have tried using a different ribbon cable port on the VMC, tried all combinations of rotating the cable, tried different ribbon cables, and even tried another csi camera from last years drone. See pic with error attached.

One thing that may be throwing you off is that the camera must be connected at boot. This has caused me heart attacks several times.

I believe you can run ls /dev/video0 to see if it is correctly recognized by the system, but ill check tonight when I have access to my Jetson again.

Thanks for the help! Turns out our ribbon cable was the problem and when I tried another, I never rebooted the jetson.