Fatal error: Uncaught Error: Call to undefined function register_widget() in /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-includes/widgets.php:1443
Stack trace:
#0 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-includes/plugin.php(524): wp_widgets_init('')
#1 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-settings.php(423): do_action('init')
#2 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-config.php(101): require_once('/home/users/2/s...')
#3 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-load.php(39): require_once('/home/users/2/s...')
#4 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-blog-header.php(13): require_once('/home/users/2/s...')
#5 /home/users/2/soushin-lab/web/online-shopping.or.jp/column/index.php(28): require('/home/users/2/s...')
#6 {main}
thrown in /home/users/2/soushin-lab/web/online-shopping.or.jp/column/wp-includes/widgets.php on line 1443