Warning: Array to string conversion in /home/u1643084/public_html/conferences/lib/pkp/classes/i18n/Locale.php on line 548

Fatal error: Uncaught TypeError: Symfony\Component\HttpFoundation\Request::formatLocale(): Argument #1 ($locale) must be of type string, array given in /home/u1643084/public_html/conferences/lib/pkp/lib/vendor/symfony/http-foundation/Request.php:1743 Stack trace: #0 [internal function]: Symfony\Component\HttpFoundation\Request::formatLocale() #1 /home/u1643084/public_html/conferences/lib/pkp/lib/vendor/symfony/http-foundation/Request.php(1690): array_map() #2 /home/u1643084/public_html/conferences/lib/pkp/classes/i18n/Locale.php(563): Symfony\Component\HttpFoundation\Request->getPreferredLanguage() #3 /home/u1643084/public_html/conferences/lib/pkp/classes/i18n/Locale.php(141): PKP\i18n\Locale->getPreferredLocale() #4 /home/u1643084/public_html/conferences/lib/pkp/classes/i18n/Locale.php(475): PKP\i18n\Locale->getLocale() #5 /home/u1643084/public_html/conferences/lib/pkp/classes/i18n/Locale.php(114): PKP\i18n\Locale->translate() #6 /home/u1643084/public_html/conferences/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(996): PKP\i18n\Locale->get() #7 /home/u1643084/public_html/conferences/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(1028): trans() #8 /home/u1643084/public_html/conferences/classes/search/ArticleSearch.php(376): __() #9 /home/u1643084/public_html/conferences/lib/pkp/classes/search/SubmissionSearch.php(353): APP\search\ArticleSearch->getResultSetOrderingOptions() #10 /home/u1643084/public_html/conferences/lib/pkp/classes/search/SubmissionSearch.php(269): PKP\search\SubmissionSearch->getResultSetOrdering() #11 /home/u1643084/public_html/conferences/pages/search/SearchHandler.php(146): PKP\search\SubmissionSearch->retrieveResults() #12 /home/u1643084/public_html/conferences/pages/search/SearchHandler.php(50): APP\pages\search\SearchHandler->search() #13 [internal function]: APP\pages\search\SearchHandler->index() #14 /home/u1643084/public_html/conferences/lib/pkp/classes/core/PKPRouter.php(327): call_user_func() #15 /home/u1643084/public_html/conferences/lib/pkp/classes/core/PKPPageRouter.php(249): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest() #16 /home/u1643084/public_html/conferences/lib/pkp/classes/core/Dispatcher.php(157): PKP\core\PKPPageRouter->route() #17 /home/u1643084/public_html/conferences/lib/pkp/classes/core/PKPApplication.php(429): PKP\core\Dispatcher->dispatch() #18 /home/u1643084/public_html/conferences/index.php(21): PKP\core\PKPApplication->execute() #19 {main} thrown in /home/u1643084/public_html/conferences/lib/pkp/lib/vendor/symfony/http-foundation/Request.php on line 1743