Fatal error: Uncaught Error: Call to a member function getId() on null in /home/itsjapon/public_html/lib/pkp/pages/libraryFiles/LibraryFileHandler.inc.php:43 Stack trace: #0 /home/itsjapon/public_html/lib/pkp/classes/core/PKPRouter.inc.php(397): LibraryFileHandler->downloadPublic(Array, Object(Request)) #1 /home/itsjapon/public_html/lib/pkp/classes/core/PKPPageRouter.inc.php(246): PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(Request), Array, false) #2 /home/itsjapon/public_html/lib/pkp/classes/core/Dispatcher.inc.php(144): PKPPageRouter->route(Object(Request)) #3 /home/itsjapon/public_html/lib/pkp/classes/core/PKPApplication.inc.php(360): Dispatcher->dispatch(Object(Request)) #4 /home/itsjapon/public_html/index.php(69): PKPApplication->execute() #5 {main} thrown in /home/itsjapon/public_html/lib/pkp/pages/libraryFiles/LibraryFileHandler.inc.php on line 43