Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/widgets.php:607
Stack trace:
#0 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/widgets.php(607): array_merge(Array, NULL)
#1 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-widget.php(580): _register_widget_update_callback(NULL, Array, NULL, Array)
#2 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-widget.php(275): WP_Widget->_register_one()
#3 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-widget-factory.php(103): WP_Widget->_register()
#4 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-hook.php(308): WP_Widget_Factory->_register_widgets('')
#5 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#6 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/widgets.php(1854): do_action('widgets_init')
#8 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-hook.php(308): wp_widgets_init('')
#9 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#10 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#11 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-settings.php(617): do_action('init')
#12 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-config.php(90): require_once('/data03/virt107...')
#13 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-load.php(50): require_once('/data03/virt107...')
#14 /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-blog-header.php(13): require_once('/data03/virt107...')
#15 /data03/virt10775/domeenid/www.intranordic.com/htdocs/index.php(17): require('/data03/virt107...')
#16 {main}
thrown in /data03/virt10775/domeenid/www.intranordic.com/htdocs/wp-includes/widgets.php on line 607