General :: Motorola Xt531 Rear Camera Not Detected

I bought my Motorola Xt531 about 2 months ago. Since then, I rooted it, uninstalled carrier apps, just the usual. Recently (like 2 weeks ago), I tried to take a picture with it, but in the moment I launched de camera app, a message flashed saying that the camera stopped responding (the exact message, in portuguese was "A camera parou de responder") and since then, all I can use when I enter the camera app (stock, or any other) is the front camera.

I tried reseting the phone, clearing app cache and data, and nothing solved the problem. Is it a hardware issue? (it never fell on the floor, or under water, nothing like that).