Unity is missing a fullscreen camera

I can't test my game because it's missing a fullscreen camera, but I don't think it is. I have one, but it's a child of the player object so it will follow you around. It was working just fine up until yesterday, and I didn't change anything. I have it set to X: 0, Y: 0, H: 1, and W: 1.

I tried adding a new camera that wasn't a child of the player, and it worked but of course it didn't follow my player anymore, so I made it a child and it stopped working.

Does anyone have any advice?