Fatal error: Uncaught Exception: Database connection failed in C:\site\olimpiade2\api\database.php:21 Stack trace: #0 C:\site\olimpiade2\api\database.php(27): Database->__construct() #1 C:\site\olimpiade2\meg_register.php(9): Database::getInstance() #2 {main} thrown in C:\site\olimpiade2\api\database.php on line 21