Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/index.php:9 Stack trace: #0 /var/www/html/index.php(9): PDO->__construct('mysql:host=db;d...', 'missel_user', 'v%O%xQTRq2x4bK4...', Array) #1 {main} thrown in /var/www/html/index.php on line 9