Nubia Z9 gives error on starting camera I bought the nubia z9 mini last year November. 

About a week ago this message appears when using the camera:

"camera error" 
"Please make sure no other applications occupy the camera, or try to restart the phone. "

I tried restarting but the same error. As requested, I've run adb dumpsys:


> adb shell dumpsys media.camera
Camera module HAL API version: 0x100
Camera module API version: 0x100
Camera module name: QCamera Module
Camera module author: Qualcomm Innovation Center Inc
Number of camera devices: 2 Vendor tags left unimplemented.
Camera 0 static information:
   Facing: BACK Orientation: 90
   Device version: 0x100
   Device is closed, no client instance
Camera 1 static information:
   Facing: FRONT
   Device version: 0x100


I put the New version V3.67 Android Version 5.1.1 [ROM], the error is same.
Can you help me?
I was able to solve the problem (thanks to Firelord):

While "being debugged", the camera is turned on. For that, I've simply did the following:


the ADB setup and command ready in PC
device connected to PC in debugging mode.
run adb logcat &gt; d:\dmp\device.log
run the camera app. Disappeared the error, the camera turns on