Uncaught Error: Call to undefined function categories_label()
in /home/soukenkansai/sokenkss.ne.jp/public_html/wp/wp-content/themes/wp/single.php on line 23

Call stack:

1. include()
   wp-includes/template-loader.php:106
2. require_once('/home/soukenkansai/s.../template-loader.php')
   wp-blog-header.php:19
3. require('/home/soukenkansai/s...p/wp-blog-header.php')
   /home/soukenkansai/sokenkss.ne.jp/public_html/index.php:17