( ! ) Fatal error: Call to a member function getId() on null in /var/www/html/lib/pkp/classes/notification/NotificationSettingsDAO.inc.php on line 188
Call Stack
#	Time	Memory	Function	Location
1	0.0000	241320	{main}( )	.../index.php:0
2	0.0060	994416	PKPApplication->execute( )	.../index.php:66
3	0.0062	1049368	Dispatcher->dispatch( )	.../PKPApplication.inc.php:170
4	0.5083	1666088	PKPPageRouter->route( )	.../Dispatcher.inc.php:130
5	0.5109	1784952	NotificationHandler->getNotificationFeedUrl( )	.../PKPPageRouter.inc.php:177
6	0.5112	1802552	NotificationSettingsDAO->getRSSTokenByUserId( )	.../NotificationHandler.inc.php:118