java.lang.RuntimeException: Unknown camera ID
	at android.hardware.Camera._getCameraInfo(Native Method)
	at android.hardware.Camera.getCameraInfo(Camera.java:334)
	at h9.a.j(Unknown Source:18)
	at h9.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.W(Unknown Source:37)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity.D(Unknown Source:90)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity$j.onClick(Unknown Source:19)
	at android.view.View.performClick(View.java:7740)
	at com.entitcs.office_attendance.java_classes.MovableFloatingActionButton.onTouch(Unknown Source:171)
	at android.view.View.dispatchTouchEvent(View.java:15797)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:3173)
	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2849)
	at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:559)
	at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1923)
	at android.app.Activity.dispatchTouchEvent(Activity.java:4490)
	at h.j.dispatchTouchEvent(Unknown Source:2)
	at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:507)
	at android.view.View.dispatchPointerEvent(View.java:16088)
	at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:7747)
	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:7498)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6907)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6969)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6930)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:7100)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6938)
	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:7157)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6911)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:6969)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:6930)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:6938)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:6911)
	at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:10099)
	at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:10050)
	at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:10010)
	at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:10249)
	at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:281)
	at android.os.MessageQueue.nativePollOnce(Native Method)
	at android.os.MessageQueue.next(MessageQueue.java:350)
	at android.os.Looper.loopOnce(Looper.java:187)
	at android.os.Looper.loop(Looper.java:368)
	at android.app.ActivityThread.main(ActivityThread.java:8826)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)