Fatal error: Uncaught Error: Call to a member function getId() on null in /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/pages/notification/NotificationHandler.inc.php:155
Stack trace:
#0 /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/classes/core/PKPRouter.inc.php(362): NotificationHandler->getNotificationFeedUrl(Array, Object(Request))
#1 /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/classes/core/PKPPageRouter.inc.php(220): PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(Request), Array, false)
#2 /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/classes/core/Dispatcher.inc.php(134): PKPPageRouter->route(Object(Request))
#3 /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/classes/core/PKPApplication.inc.php(178): Dispatcher->dispatch(Object(Request))
#4 /var/www/vhosts/pen2print.org/journals.pen2print.org/index.php(64): PKPApplication->execute()
#5 {main}
thrown in /var/www/vhosts/pen2print.org/journals.pen2print.org/lib/pkp/pages/notification/NotificationHandler.inc.php on line 155