( ! ) Fatal error: Call to a member function getSetting() on null in /var/www/html/classes/notification/Notification.inc.php on line 115
Call Stack
#	Time	Memory	Function	Location
1	0.0001	241352	{main}( )	.../index.php:0
2	0.0160	994448	PKPApplication->execute( )	.../index.php:66
3	0.0163	1049400	Dispatcher->dispatch( )	.../PKPApplication.inc.php:170
4	0.2249	1700520	PKPPageRouter->route( )	.../Dispatcher.inc.php:130
5	0.2281	1817624	NotificationHandler->subscribeMailList( )	.../PKPPageRouter.inc.php:177
6	0.2295	1994848	NotificationMailingListForm->display( )	.../NotificationHandler.inc.php:192
7	0.2295	1995256	Notification->getSubscriptionSettings( )	.../NotificationMailingListForm.inc.php:50