Fatal error: Uncaught Error: Class "WP_Widget_Block" not found in /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/class-wp-widget-factory.php:62
Stack trace:
#0 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/widgets.php(123): WP_Widget_Factory->register('WP_Widget_Block')
#1 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/widgets.php(1863): register_widget('WP_Widget_Block')
#2 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/class-wp-hook.php(287): wp_widgets_init('')
#3 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#4 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#5 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-settings.php(546): do_action('init')
#6 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-config.php(115): require_once('/customers/2/2/...')
#7 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-load.php(37): require_once('/customers/2/2/...')
#8 /customers/2/2/7/kjottsentralen.no/httpd.www/wp-blog-header.php(13): require_once('/customers/2/2/...')
#9 /customers/2/2/7/kjottsentralen.no/httpd.www/index.php(17): require('/customers/2/2/...')
#10 {main}
  thrown in /customers/2/2/7/kjottsentralen.no/httpd.www/wp-includes/class-wp-widget-factory.php on line 62