An error from rosalina or luma or an error from the console system ? because its not the same thing

Okay so from what i found it can be caused by many things : corrupted files or sd, the camera module on the motherboard isnt connected or isnt recognized by the system, Your data is corrupted or the bug is caused by something else like a corrupted game that breaks others files.

If you have it, try to remove Shut the Cam Up. Had the 3DS patch on a n3DS from a transfer, removing it fixed this

i had this on my old og 3ds it happended after i spilt water on it the camera was broke