( ! ) 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	0.0000	241304	{main}( )	.../index.php:0
2	0.0061	994416	PKPApplication->execute( )	.../index.php:66
3	0.0063	1049368	Dispatcher->dispatch( )	.../PKPApplication.inc.php:170
4	1.0529	1700488	PKPPageRouter->route( )	.../Dispatcher.inc.php:130
5	1.0558	1817576	NotificationHandler->subscribeMailList( )	.../PKPPageRouter.inc.php:177
6	1.0571	1994800	NotificationMailingListForm->display( )	.../NotificationHandler.inc.php:192
7	1.0571	1995208	Notification->getSubscriptionSettings( )	.../NotificationMailingListForm.inc.php:50