java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources$Theme android.content.Context.getTheme()' on a null object reference
	at android.app.AlertDialog.resolveDialogTheme(AlertDialog.java:224)
	at android.app.AlertDialog.<init>(AlertDialog.java:201)
	at android.app.AlertDialog.<init>(AlertDialog.java:197)
	at android.app.AlertDialog.<init>(AlertDialog.java:142)
	at android.app.ProgressDialog.<init>(ProgressDialog.java:94)
	at com.entitcs.office_attendance.e.d1.G(Unknown Source:6)
	at com.entitcs.office_attendance.e.d1$q.f1(Unknown Source:358)
	at com.entitcs.office_attendance.e.d1$q.onPostExecute(Unknown Source:2)
	at android.os.AsyncTask.finish(AsyncTask.java:695)
	at android.os.AsyncTask.-wrap1(Unknown Source:0)
	at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:712)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:176)
	at android.app.ActivityThread.main(ActivityThread.java:6635)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)