Fatal error: Uncaught PDOException: Database connection failed: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo for mariadb_mariadb failed: Name or service not known in /var/www/html/app/core/Database.php:36 Stack trace: #0 /var/www/html/app/core/Database.php(42): App\Core\Database->__construct() #1 /var/www/html/app/core/Router.php(12): App\Core\Database::getInstance() #2 /var/www/html/public_html/index.php(32): App\Core\Router->__construct() #3 {main} thrown in /var/www/html/app/core/Database.php on line 36