Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, int given in /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/statistics/PKPStatisticsHelper.php:223 Stack trace: #0 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/statistics/PKPStatisticsHelper.php(223): array_key_exists() #1 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/statistics/PKPStatisticsHelper.php(180): PKP\statistics\PKPStatisticsHelper->getLocation() #2 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/observers/listeners/LogUsageEvent.php(142): PKP\statistics\PKPStatisticsHelper->getGeoData() #3 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/observers/listeners/LogUsageEvent.php(53): PKP\observers\listeners\LogUsageEvent->prepareUsageEvent() #4 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(441): PKP\observers\listeners\LogUsageEvent->handle() #5 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(249): Illuminate\Events\Dispatcher->Illuminate\Events\{closure}() #6 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(451): Illuminate\Events\Dispatcher->dispatch() #7 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/pages/article/ArticleHandler.php(502): event() #8 [internal function]: APP\pages\article\ArticleHandler->download() #9 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/core/PKPRouter.php(334): call_user_func() #10 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/core/PKPPageRouter.php(277): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest() #11 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/core/Dispatcher.php(165): PKP\core\PKPPageRouter->route() #12 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/core/PKPApplication.php(388): PKP\core\Dispatcher->dispatch() #13 /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/index.php(21): PKP\core\PKPApplication->execute() #14 {main} thrown in /home/u509556387/domains/aba-agroecologia.org.br/public_html/revista/lib/pkp/classes/statistics/PKPStatisticsHelper.php on line 223