Fatal error: Uncaught Error: Call to a member function getData() on null in /home/futajeet/public_html/plugins/generic/pdfJsViewer/PdfJsViewerPlugin.inc.php:88 Stack trace: #0 /home/futajeet/public_html/lib/pkp/classes/plugins/HookRegistry.inc.php(107): PdfJsViewerPlugin->submissionCallback('ArticleHandler:...', Array) #1 /home/futajeet/public_html/pages/article/ArticleHandler.inc.php(330): HookRegistry::call('ArticleHandler:...', Array) #2 /home/futajeet/public_html/lib/pkp/classes/core/PKPRouter.inc.php(395): ArticleHandler->view(Array, Object(Request)) #3 /home/futajeet/public_html/lib/pkp/classes/core/PKPPageRouter.inc.php(246): PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(Request), Array, false) #4 /home/futajeet/public_html/lib/pkp/classes/core/Dispatcher.inc.php(144): PKPPageRouter->route(Object(Request)) #5 /home/futajeet/public_html/lib/pkp/classes/core/PKPApplication.inc.php(362): Dispatcher->dispatch(Object(Request)) #6 /home/futajeet/public_html/index.php(68): PKPApplication->execute() #7 {main} thrown in /home/futajeet/public_html/plugins/generic/pdfJsViewer/PdfJsViewerPlugin.inc.php on line 88