Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/mariadb_crud.php:15 Stack trace: #0 /var/www/html/mariadb_crud.php(15): PDO->__construct('mysql:host=host...', 'deployy', Object(SensitiveParameterValue), Array) #1 {main} thrown in /var/www/html/mariadb_crud.php on line 15