java.lang.RuntimeException: Fail to connect to camera service
	at android.hardware.Camera.<init>(Camera.java:577)
	at android.hardware.Camera.open(Camera.java:412)
	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$j.onClick(Unknown Source:19)
	at android.view.View.performClick(View.java:6608)
	at com.entitcs.office_attendance.java_classes.MovableFloatingActionButton.onTouch(Unknown Source:171)
	at android.view.View.dispatchTouchEvent(View.java:12539)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3040)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2720)
	at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:467)
	at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1830)
	at android.app.Activity.dispatchTouchEvent(Activity.java:4869)
	at h.m.dispatchTouchEvent(Unknown Source:2)
	at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:425)
	at android.view.View.dispatchPointerEvent(View.java:12790)
	at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:5137)
	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4940)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4457)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4510)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4476)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4616)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4484)
	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4673)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4457)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4510)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4476)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4484)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4457)
	at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:7123)
	at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:7092)
	at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:7053)
	at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:7227)
	at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:201)
	at android.os.MessageQueue.nativePollOnce(Native Method)
	at android.os.MessageQueue.next(MessageQueue.java:326)
	at android.os.Looper.loop(Looper.java:160)
	at android.app.ActivityThread.main(ActivityThread.java:6924)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:590)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)