Warning: assert(): assert(is_a($issue, 'Issue')) failed in /htdocs/home/revistaterceiramargem.com/www/classes/issue/IssueAction.inc.php on line 29 Fatal error: Uncaught Error: Call to a member function getJournalId() on null in /htdocs/home/revistaterceiramargem.com/www/classes/issue/IssueAction.inc.php:31 Stack trace: #0 /htdocs/home/revistaterceiramargem.com/www/pages/search/SearchHandler.inc.php(246): IssueAction->subscriptionRequired(NULL, Object(Journal)) #1 /htdocs/home/revistaterceiramargem.com/www/lib/pkp/classes/core/PKPRouter.inc.php(391): SearchHandler->authors(Array, Object(Request)) #2 /htdocs/home/revistaterceiramargem.com/www/lib/pkp/classes/core/PKPPageRouter.inc.php(231): PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(Request), Array, false) #3 /htdocs/home/revistaterceiramargem.com/www/lib/pkp/classes/core/Dispatcher.inc.php(143): PKPPageRouter->route(Object(Request)) #4 /htdocs/home/revistaterceiramargem.com/www/lib/pkp/classes/core/PKPApplication.inc.php(279): Dispatcher->dispatch(Object(Request)) #5 /htdocs/home/revistaterceiramargem.com/www/index.php(68): PKPApplication->execute() #6 {main} thrown in /htdocs/home/revistaterceiramargem.com/www/classes/issue/IssueAction.inc.php on line 31