No LED indicator after screen replacement

I just replaced a lcd and digitizer on this phone. After the repair the customer noticed that the LED indicator light is no longer working and the rear camera stopped working.

I haven't had a chance to tear it back down to take a look but figured maybe someone could give me some pointers on what to look for. I am hoping the rear camera is just unplugged but no clue about the LED light.

Has anyone ran into this or have any suggestions on what could cause this or what to do??

So it is not the LED indicator lightthat's not working it is the flash on the camera. So the camera app will open but you are not able to take pictures and flash won't work or flashlight