Fatal error: Uncaught Error: Call to a member function prepare() on null in B:\xampp\htdocs\Belanda\MASTER\sipp\includes\nilai.inc.php:29
Stack trace:
#0 B:\xampp\htdocs\Belanda\MASTER\sipp\index.php(6): Nilai->readAll()
#1 {main}
thrown in B:\xampp\htdocs\Belanda\MASTER\sipp\includes\nilai.inc.php on line 29