java.lang.RuntimeException: An error occurred while executing doInBackground()
	at android.os.AsyncTask$4.done(AsyncTask.java:399)
	at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
	at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
	at java.util.concurrent.FutureTask.run(FutureTask.java:271)
	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	at java.lang.Thread.run(Thread.java:919)
Caused by: java.lang.IllegalArgumentException: x must be >= 0
	at android.graphics.Bitmap.checkXYSign(Bitmap.java:459)
	at android.graphics.Bitmap.createBitmap(Bitmap.java:897)
	at android.graphics.Bitmap.createBitmap(Bitmap.java:860)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity.getFaceBitmap(FaceTrackerActivity.java:2281)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity$6$1.doInBackground(FaceTrackerActivity.java:967)
	at com.entitcs.office_attendance.camera.FaceTrackerActivity$6$1.doInBackground(FaceTrackerActivity.java:957)
	at android.os.AsyncTask$3.call(AsyncTask.java:378)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 4 more