Fatal error: Uncaught InvalidArgumentException: Order direction must be "asc" or "desc". in /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php:2628 Stack trace: #0 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/submission/Collector.php(471): Illuminate\Database\Query\Builder->orderBy() #1 /home/u220396350/domains/jurnal.padangtekno.com/public_html/classes/submission/Collector.php(55): PKP\submission\Collector->getQueryBuilder() #2 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/submission/DAO.php(93): APP\submission\Collector->getQueryBuilder() #3 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/submission/Collector.php(97): PKP\submission\DAO->getCount() #4 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/pages/catalog/PKPCatalogHandler.php(92): PKP\submission\Collector->getCount() #5 [internal function]: PKP\pages\catalog\PKPCatalogHandler->category() #6 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/core/PKPRouter.php(327): call_user_func() #7 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/core/PKPPageRouter.php(249): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest() #8 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/core/Dispatcher.php(157): PKP\core\PKPPageRouter->route() #9 /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/classes/core/PKPApplication.php(429): PKP\core\Dispatcher->dispatch() #10 /home/u220396350/domains/jurnal.padangtekno.com/public_html/index.php(21): PKP\core\PKPApplication->execute() #11 {main} thrown in /home/u220396350/domains/jurnal.padangtekno.com/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php on line 2628