Fatal error: Uncaught Exception: The mailer driver isn't specified in the config.inc.php configuration file. See the "default" setting in the [email] configuration. Configuration details are available in the config.TEMPLATE.inc.php template. in /var/www/html/ojs/lib/pkp/classes/core/PKPContainer.php:519 Stack trace: #0 /var/www/html/ojs/lib/pkp/classes/core/PKPContainer.php(470): PKP\core\PKPContainer::getDefaultMailer() #1 /var/www/html/ojs/lib/pkp/classes/core/PKPContainer.php(169): PKP\core\PKPContainer->loadConfiguration() #2 /var/www/html/ojs/lib/pkp/classes/core/PKPApplication.php(268): PKP\core\PKPContainer->registerConfiguredProviders() #3 /var/www/html/ojs/lib/pkp/classes/core/PKPApplication.php(240): PKP\core\PKPApplication->initializeLaravelContainer() #4 /var/www/html/ojs/classes/core/Application.php(47): PKP\core\PKPApplication->__construct() #5 /var/www/html/ojs/lib/pkp/includes/bootstrap.php(37): APP\core\Application->__construct() #6 /var/www/html/ojs/index.php(18): require_once('/var/www/html/o...') #7 {main} thrown in /var/www/html/ojs/lib/pkp/classes/core/PKPContainer.php on line 519