Im testing my database and validation scripts in php. After changing the database password to run the error script, it is not displaying the message, but instead displaying a white blank page.

I have php database file labeled database.php. When I test my connection error script in database.php, I pass in the directory files ($mysqli = require __DIR__ . "/database.php";) to my validation file labeled auth.php & change $password in database.php, but Im getting a blank page instead of the connection error script (die("Connection error: " . $mysqli->connect_error);).