android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@9c9d68e is not valid; is your activity running?
	at android.view.ViewRootImpl.setView(ViewRootImpl.java:944)
	at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:384)
	at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:94)
	at android.app.Dialog.show(Dialog.java:388)
	at com.entitcs.office_attendance.background_works.d.b(Unknown Source:106)
	at com.entitcs.office_attendance.background_works.d.onPostExecute(Unknown Source:2)
	at android.os.AsyncTask.finish(AsyncTask.java:695)
	at android.os.AsyncTask.-wrap1(Unknown Source:0)
	at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:712)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:210)
	at android.app.ActivityThread.main(ActivityThread.java:7080)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:523)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:863)