I believe that one of the comments is correct and I want to elevate it.

I would think that it's the route() function in your blade file that's complaining, not anywhere else. You have cam_id there, but does $item['id'] have a value?

I've run into this mysterious error before that it ended up passing a null value in a route() call. Even if the key is specified, if it doesn't have a value, it is missing.