Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /var/www/time.luft.co.jp/public/php/date/calender/index.php:179 Stack trace: #0 /var/www/time.luft.co.jp/public/php/date/calender/index.php(179): array_merge() #1 {main} thrown in /var/www/time.luft.co.jp/public/php/date/calender/index.php on line 179