java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources$Theme android.content.Context.getTheme()' on a null object reference
	at android.app.AlertDialog.resolveDialogTheme(AlertDialog.java:232)
	at android.app.AlertDialog.<init>(AlertDialog.java:210)
	at android.app.AlertDialog.<init>(AlertDialog.java:206)
	at android.app.AlertDialog.<init>(AlertDialog.java:151)
	at android.app.ProgressDialog.<init>(ProgressDialog.java:88)
	at com.entitcs.office_attendance.e.d1.G(SourceFile)
	at com.entitcs.office_attendance.e.d1$q.f1(SourceFile)
	at com.entitcs.office_attendance.e.d1$q.onPostExecute(SourceFile)
	at android.os.AsyncTask.finish(AsyncTask.java:660)
	at android.os.AsyncTask.-wrap1(AsyncTask.java)
	at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:677)
	at android.os.Handler.dispatchMessage(Handler.java:110)
	at android.os.Looper.loop(Looper.java:203)
	at android.app.ActivityThread.main(ActivityThread.java:6328)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1076)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:937)