Deprecated: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/lib/pkp/classes/core/PKPContainer.php on line 66

Fatal error: Uncaught UnhandledMatchError: Unhandled match case NULL in /var/www/html/lib/pkp/classes/core/PKPContainer.php:70 Stack trace: #0 /var/www/html/lib/pkp/classes/core/PKPContainer.php(360): PKP\core\PKPContainer::getDatabaseDriverName() #1 /var/www/html/lib/pkp/classes/core/PKPContainer.php(164): PKP\core\PKPContainer->loadConfiguration() #2 /var/www/html/lib/pkp/classes/core/PKPApplication.php(268): PKP\core\PKPContainer->registerConfiguredProviders() #3 /var/www/html/lib/pkp/classes/core/PKPApplication.php(240): PKP\core\PKPApplication->initializeLaravelContainer() #4 /var/www/html/classes/core/Application.php(47): PKP\core\PKPApplication->__construct() #5 /var/www/html/lib/pkp/includes/bootstrap.php(37): APP\core\Application->__construct() #6 /var/www/html/index.php(18): require_once('/var/www/html/l...') #7 {main} thrown in /var/www/html/lib/pkp/classes/core/PKPContainer.php on line 70