java.lang.NullPointerException: Attempt to read from field 'java.lang.Object android.util.Pair.second' on a null object reference
	at com.entitcs.office_attendance.FaceRecognitionRelated.FaceRecognitionActivity.recognizeFace(FaceRecognitionActivity.java:132)
	at com.entitcs.office_attendance.FaceRecognitionRelated.FaceRecognitionActivity.access$000(FaceRecognitionActivity.java:37)
	at com.entitcs.office_attendance.FaceRecognitionRelated.FaceRecognitionActivity$1.onClick(FaceRecognitionActivity.java:69)
	at android.view.View.performClick(View.java:7261)
	at android.view.View.performClickInternal(View.java:7223)
	at android.view.View.access$3800(View.java:824)
	at android.view.View$PerformClick.run(View.java:27721)
	at android.os.Handler.handleCallback(Handler.java:883)
	at android.os.Handler.dispatchMessage(Handler.java:100)
	at android.os.Looper.loop(Looper.java:238)
	at android.app.ActivityThread.main(ActivityThread.java:7824)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)