Camera don't work because led is shown as in use.

Hi.

I replaced the whole block LCD+digi+glass on my old G6-U10 after I dropped it and broke the lcd. Now that I can use it again, I noticed that even rear camera doesn't work: a message says that flash Led is already in use by another app. Obviously that's not true, and even the when try to turn it on by Torch app, it stays off. What I want to know: is the camera sensor responsible of managing the flash? Could a problem in the sensor (or in its flat) cause the flash to claim its state as ON even when it's turned off, or even the led must be broken?

Front camera works, despite that default camera app starts trying to activate the rear one, closing itself due to the problem, without letting me switch to the front one.

Camera sensor is P8N09F SUNNY .