java.lang.NumberFormatException: Invalid int: ""
	at java.lang.Integer.invalidInt(Integer.java:138)
	at java.lang.Integer.parseInt(Integer.java:358)
	at java.lang.Integer.parseInt(Integer.java:334)
	at com.entitcs.office_attendance.activities.ShowSubscriptionPage$k.onClick(SourceFile)
	at android.view.View.performClick(View.java:5212)
	at android.view.View$PerformClick.run(View.java:21214)
	at android.os.Handler.handleCallback(Handler.java:739)
	at android.os.Handler.dispatchMessage(Handler.java:95)
	at android.os.Looper.loop(Looper.java:148)
	at android.app.ActivityThread.main(ActivityThread.java:5628)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:853)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:737)