Fatal error: Uncaught Error: Call to undefined function is_shop() in /home/takahata/o-takahata.jp/public_html/wp-content/themes/pond/header.php:74 Stack trace: #0 /home/takahata/o-takahata.jp/public_html/wp-includes/template.php(722): require_once() #1 /home/takahata/o-takahata.jp/public_html/wp-includes/template.php(671): load_template('/home/takahata/...', true) #2 /home/takahata/o-takahata.jp/public_html/wp-includes/general-template.php(41): locate_template(Array, true) #3 /home/takahata/o-takahata.jp/public_html/wp-content/themes/pond/index.php(12): get_header() #4 /home/takahata/o-takahata.jp/public_html/wp-includes/template-loader.php(98): include('/home/takahata/...') #5 /home/takahata/o-takahata.jp/public_html/wp-blog-header.php(19): require_once('/home/takahata/...') #6 /home/takahata/o-takahata.jp/public_html/index.php(17): require('/home/takahata/...') #7 {main} thrown in /home/takahata/o-takahata.jp/public_html/wp-content/themes/pond/header.php on line 74