torch light wont turn off, camera wont work while camera is already in use.

my phone camera will not work because it says something else is running which is using the camera (to my knowledge there is nothing i am using). when i turn the torch on the front light comes on, when i turn it off back light comes on. the only way to turn light off is by restarting phone. could the torch be permanently running in my phone causing camera not to work? can i remove torch from phone? what else could be using phone camera?
any help would be very much appreciated.
(rebooting phone does not work, disable camera does not work)

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