Fatal error: Uncaught Error: Call to undefined function add_theme_support() in /home/koishimariko/iyakujoho.com/public_html/wp-content/themes/sango-theme-child/head.php:41 Stack trace: #0 {main} thrown in /home/koishimariko/iyakujoho.com/public_html/wp-content/themes/sango-theme-child/head.php on line 41