Fatal error: Uncaught mysqli_sql_exception: Connection refused in /var/www/db.php:8 Stack trace: #0 /var/www/db.php(8): mysqli_connect() #1 /var/www/hottg/function.php(212): db() #2 /var/www/hottg/post.php(81): select() #3 /var/www/hottg/route.php(63): include_once('...') #4 {main} thrown in /var/www/db.php on line 8