Fatal error: Uncaught TypeError: mysqli_close(): Argument #1 ($mysql) must be of type mysqli, int given in /var/www/html/www.aerodromes.fr/www/signal.php:21 Stack trace: #0 /var/www/html/www.aerodromes.fr/www/signal.php(21): mysqli_close() #1 {main} thrown in /var/www/html/www.aerodromes.fr/www/signal.php on line 21