Fatal error: Uncaught TypeError: key(): Argument #1 ($array) must be of type array, null given in /var/www/vhosts/php8.jiqoo.jp/httpdocs/campaign/game/ncj/index.php:11 Stack trace: #0 /var/www/vhosts/php8.jiqoo.jp/httpdocs/campaign/game/ncj/index.php(11): key() #1 {main} thrown in /var/www/vhosts/php8.jiqoo.jp/httpdocs/campaign/game/ncj/index.php on line 11