Fatal error: Uncaught Error: Call to a member function getData() on null in C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\plugins\generic\htmlArticleGalley\HtmlArticleGalleyPlugin.php:94 Stack trace: #0 [internal function]: APP\plugins\generic\htmlArticleGalley\HtmlArticleGalleyPlugin->articleViewCallback() #1 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\plugins\Hook.php(139): call_user_func_array() #2 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\plugins\Hook.php(113): PKP\plugins\Hook::run() #3 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\pages\article\ArticleHandler.php(366): PKP\plugins\Hook::call() #4 [internal function]: APP\pages\article\ArticleHandler->view() #5 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\core\PKPRouter.php(334): call_user_func() #6 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\core\PKPPageRouter.php(277): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest() #7 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\core\Dispatcher.php(165): PKP\core\PKPPageRouter->route() #8 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\lib\pkp\classes\core\PKPApplication.php(388): PKP\core\Dispatcher->dispatch() #9 C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\index.php(21): PKP\core\PKPApplication->execute() #10 {main} thrown in C:\wwwroot\isn-iran\ijkd.org\wwwroot\ojs-3.4.0-4\plugins\generic\htmlArticleGalley\HtmlArticleGalleyPlugin.php on line 94