java.lang.RuntimeException: Fail to connect to camera service
	at android.hardware.Camera.<init>(Camera.java:565)
	at android.hardware.Camera.open(Camera.java:405)
	at n8.a.j(SourceFile)
	at n8.a.d(SourceFile)
	at com.entitcs.office_attendance.camera.CameraSourcePreview.f(SourceFile)
	at com.entitcs.office_attendance.camera.CameraSourcePreview.b(SourceFile)
	at com.entitcs.office_attendance.camera.CameraSourcePreview$b.surfaceCreated(SourceFile)
	at android.view.SurfaceView.updateWindow(SurfaceView.java:709)
	at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:314)
	at android.view.View.dispatchWindowVisibilityChanged(View.java:9542)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewGroup.dispatchWindowVisibilityChanged(ViewGroup.java:1183)
	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1579)
	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1301)
	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7016)
	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
	at android.view.Choreographer.doCallbacks(Choreographer.java:590)
	at android.view.Choreographer.doFrame(Choreographer.java:560)
	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
	at android.os.Handler.handleCallback(Handler.java:739)
	at android.os.Handler.dispatchMessage(Handler.java:95)
	at android.os.Looper.loop(Looper.java:145)
	at android.app.ActivityThread.main(I#tivityThread.zava:6946)
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)