java.lang.RuntimeException: Fail to connect to camera service
	at android.hardware.Camera.<init>(Camera.java:605)
	at android.hardware.Camera.open(Camera.java:479)
	at n8.a.j(Unknown Source:32)
	at n8.a.d(Unknown Source:9)
	at com.entitcs.office_attendance.camera.CameraSourcePreview.f(Unknown Source:29)
	at com.entitcs.office_attendance.camera.CameraSourcePreview.d(Unknown Source:12)
	at com.entitcs.office_attendance.camera.CameraSourcePreview.e(Unknown Source:2)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity.X(Unknown Source:37)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity.E(Unknown Source:90)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity$j.onClick(Unknown Source:19)
	at android.view.View.performClick(View.java:7652)
	at com.entitcs.office_attendance.java_classes.MovableFloatingActionButton.onTouch(Unknown Source:171)
	at android.view.View.dispatchTouchEvent(View.java:15267)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3218)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3189)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3189)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3189)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3189)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3189)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2847)
	at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:764)
	at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1984)
	at android.app.Activity.dispatchTouchEvent(Activity.java:4673)
	at h.m.dispatchTouchEvent(Unknown Source:2)
	at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:713)
	at android.view.View.dispatchPointerEvent(View.java:15549)
	at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:7160)
	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:6907)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6342)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6409)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6370)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:6543)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6378)
	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:6600)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6346)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6409)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6370)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6378)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6346)
	at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:9592)
	at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:9543)
	at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:9504)
	at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:9739)
	at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:295)
	at android.os.MessageQueue.nativePollOnce(Native Method)
	at android.os.MessageQueue.next(MessageQueue.java:339)
	at android.os.Looper.loopOnce(Looper.java:176)
	at android.os.Looper.loop(Looper.java:324)
	at android.app.ActivityThread.main(ActivityThread.java:8558)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:582)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1061)