Fatal error: Uncaught Error: Call to undefined function Nextend\SmartSlider3\Platform\WordPress\Widget\wp_use_widgets_block_editor() in /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/WordPress/Widget/WidgetHelper.php:41 Stack trace: #0 /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-includes/class-wp-hook.php(292): Nextend\SmartSlider3\Platform\WordPress\Widget\WidgetHelper->widgets_init('') #1 /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #2 /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-includes/widgets.php(1799): do_action('widgets_init') #4 /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-includes/class-wp-hook.php(292): wp_widgets_init('') #5 /homepages/12/ in /homepages/12/d866327371/htdocs/hdd/de.maennertach.www/wordpress/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/WordPress/Widget/WidgetHelper.php on line 41