Fatal error: Uncaught RuntimeException: Missing database environment variables: DB_HOST, DB_NAME, DB_USER in /var/task/user/config/db_config.php:31 Stack trace: #0 /var/task/user/src/models/Database.php(7): Database->__construct() #1 /var/task/user/public/election-results.php(5): DatabaseModel->__construct() #2 {main} thrown in /var/task/user/config/db_config.php on line 31