Fatal error: Uncaught mysqli_sql_exception: Connection refused in /var/www/html/inc/db.php:9 Stack trace: #0 /var/www/html/inc/db.php(9): mysqli_connect() #1 /var/www/html/index.php(13): include('...') #2 {main} thrown in /var/www/html/inc/db.php on line 9