Fatal error: Uncaught Error: Call to undefined function register_widget() in /home/customer/www/biliato.it/public_html/wp-includes/widgets.php:1722 Stack trace: #0 /home/customer/www/biliato.it/public_html/wp-includes/class-wp-hook.php(287): wp_widgets_init('') #1 /home/customer/www/biliato.it/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /home/customer/www/biliato.it/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /home/customer/www/biliato.it/public_html/wp-settings.php(545): do_action('init') #4 /home/customer/www/biliato.it/public_html/wp-config.php(88): require_once('/home/customer/...') #5 /home/customer/www/biliato.it/public_html/wp-load.php(37): require_once('/home/customer/...') #6 /home/customer/www/biliato.it/public_html/wp-blog-header.php(13): require_once('/home/customer/...') #7 /home/customer/www/biliato.it/public_html/index.php(27): require('/home/customer/...') #8 {main} thrown in /home/customer/www/biliato.it/public_html/wp-includes/widgets.php on line 1722