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Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Widget::__construct(), 0 passed in /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-widget-factory.php on line 62 and at least 2 expected in /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-widget.php:163 Stack trace: #0 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-widget-factory.php(62): WP_Widget->__construct() #1 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/widgets.php(115): WP_Widget_Factory->register('SlideshowPlugin...') #2 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-content/plugins/slideshow-jquery-image-gallery/classes/SlideshowPluginWidget.php(153): register_widget('SlideshowPlugin...') #3 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-hook.php(308): SlideshowPluginWidget::registerWidget('') #4 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #5 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/widgets.php(1854): do_action('widgets_init') #7 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-hook.php(308): wp_widgets_init('') #8 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #9 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-settings.php(617): do_action('init') #11 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-config.php(115): require_once('/homepages/34/d...') #12 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-load.php(50): require_once('/homepages/34/d...') #13 /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-blog-header.php(13): require_once('/homepages/34/d...') #14 /homepages/34/d26013641/htdocs/stadt-media/aktiv/index.php(17): require('/homepages/34/d...') #15 {main} thrown in /homepages/34/d26013641/htdocs/stadt-media/aktiv/wp-includes/class-wp-widget.php on line 163