Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /var/www/html/functions.inc.php:742 Stack trace: #0 /var/www/html/functions.inc.php(742): usort() #1 /var/www/html/index.php(74): getResultArray() #2 {main} thrown in /var/www/html/functions.inc.php on line 742