Fatal error: Uncaught TypeError: mysqli_close(): Argument #1 ($mysql) must be of type mysqli, null given in /homepages/39/d162778147/htdocs/aires.php:2524 Stack trace: #0 /homepages/39/d162778147/htdocs/aires.php(2524): mysqli_close(NULL) #1 {main} thrown in /homepages/39/d162778147/htdocs/aires.php on line 2524