Fatal error: Uncaught mysqli_sql_exception: Connection refused in /home/course/u53/public_html/submissions/submission04/scripts/db_connection.php:9 Stack trace: #0 /home/course/u53/public_html/submissions/submission04/scripts/db_connection.php(9): mysqli->__construct() #1 {main} thrown in /home/course/u53/public_html/submissions/submission04/scripts/db_connection.php on line 9