Fatal error: Uncaught mysqli_sql_exception: Connection refused in /var/www/html/www/config.db.php:9 Stack trace: #0 /var/www/html/www/config.db.php(9): mysqli->__construct('172.19.0.1:3306', 'daria', Object(SensitiveParameterValue), 'portfoliodb') #1 /var/www/html/www/index.php(3): require_once('/var/www/html/w...') #2 {main} thrown in /var/www/html/www/config.db.php on line 9