Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /homepages/38/d180497569/htdocs/pcm/wp-includes/widgets.php:607 Stack trace: #0 /homepages/38/d180497569/htdocs/pcm/wp-includes/widgets.php(607): array_merge() #1 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-widget.php(580): _register_widget_update_callback() #2 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-widget.php(275): WP_Widget->_register_one() #3 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-widget-factory.php(103): WP_Widget->_register() #4 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-hook.php(308): WP_Widget_Factory->_register_widgets() #5 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #6 /homepages/38/d180497569/htdocs/pcm/wp-includes/plugin.php(517): WP_Hook->do_action() #7 /homepages/38/d180497569/htdocs/pcm/wp-includes/widgets.php(1854): do_action() #8 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-hook.php(308): wp_widgets_init() #9 /homepages/38/d180497569/htdocs/pcm/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #10 /homepages/38/d180497569/htdocs/pcm/wp-includes/plugin.php(517): WP_Hook->do_action() #11 /homepages/38/d180497569/htdocs/pcm/wp-settings.php(617): do_action() #12 /homepages/38/d180497569/htdocs/pcm/wp-config.php(131): require_once('/homepages/38/d...') #13 /homepages/38/d180497569/htdocs/pcm/wp-load.php(50): require_once('/homepages/38/d...') #14 /homepages/38/d180497569/htdocs/pcm/wp-blog-header.php(13): require_once('/homepages/38/d...') #15 /homepages/38/d180497569/htdocs/pcm/index.php(17): require('/homepages/38/d...') #16 {main} thrown in /homepages/38/d180497569/htdocs/pcm/wp-includes/widgets.php on line 607