this is index.php
https://www.intraxjp.com/ayusa/summercamp/%e6%9c%aa%e5%88%86%e9%a1%9e/hello-world/
Fatal error: Uncaught Error: Call to undefined function disp_array() in /home/intraxjp/www/intraxjp.com/ayusa/wp-content/themes/base/index.php:78 Stack trace: #0 /home/intraxjp/www/intraxjp.com/ayusa/wp-includes/template-loader.php(77): include() #1 /home/intraxjp/www/intraxjp.com/ayusa/wp-blog-header.php(19): require_once('/home/intraxjp/...') #2 /home/intraxjp/www/intraxjp.com/ayusa/index.php(17): require('/home/intraxjp/...') #3 {main} thrown in /home/intraxjp/www/intraxjp.com/ayusa/wp-content/themes/base/index.php on line 78