Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for bdnygwvacademy.mysql.db failed: H�te inconnu. in C:\xampp\htdocs\academy\courses.php on line 16

Warning: mysqli::__construct(): (HY000/2002): php_network_getaddresses: getaddrinfo for bdnygwvacademy.mysql.db failed: H�te inconnu. in C:\xampp\htdocs\academy\courses.php on line 16

Fatal error: Uncaught Error: mysqli object is already closed in C:\xampp\htdocs\academy\courses.php:23 Stack trace: #0 C:\xampp\htdocs\academy\courses.php(23): mysqli->query('\nSELECT setting...') #1 {main} thrown in C:\xampp\htdocs\academy\courses.php on line 23