Fatal error: Uncaught mysqli_sql_exception: Connection refused in /var/www/html/connect.inc.php:15 Stack trace: #0 /var/www/html/connect.inc.php(15): mysqli_connect() #1 /var/www/html/header.php(8): require('...') #2 /var/www/html/signup.php(1): include('...') #3 {main} thrown in /var/www/html/connect.inc.php on line 15