Fatal error: Uncaught Error: Call to undefined function wp_body_open() in /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-content/themes/sango-theme/header.php:15 Stack trace: #0 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-includes/template.php(688): require_once() #1 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-includes/template.php(647): load_template('/home/exrush/xn...', true) #2 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-includes/general-template.php(41): locate_template(Array, true) #3 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-content/themes/sango-theme/single.php(1): get_header() #4 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-includes/template-loader.php(74): include('/home/exrush/xn...') #5 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-blog-header.php(19): require_once('/home/exrush/xn...') #6 /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/index.php(17): require('/home/exrush/xn...') #7 {main} thrown in /home/exrush/xn--nck3dtbxb7a0408dvwxa.jp/public_html/wp-content/themes/sango-theme/header.php on line 15