Warning: Undefined variable $conn in /var/www/html/aplikasique.my.id/public/x100c/print_nila.php on line 9

Fatal error: Uncaught Error: Call to a member function query() on null in /var/www/html/aplikasique.my.id/public/x100c/print_nila.php:9 Stack trace: #0 {main} thrown in /var/www/html/aplikasique.my.id/public/x100c/print_nila.php on line 9