Fatal error: Uncaught Error: Call to undefined function Nextend\SmartSlider3\Platform\WordPress\Widget\wp_use_widgets_block_editor() in /data/web/virtuals/230707/virtual/www/domains/digitalight.cz/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/WordPress/Widget/WidgetHelper.php:21 Stack trace: #0 /data/web/virtuals/230707/virtual/www/domains/digitalight.cz/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/WordPress/SmartSlider3PlatformWordPress.php(43): Nextend\SmartSlider3\Platform\WordPress\Widget\WidgetHelper->__construct() #1 /data/web/virtuals/230707/virtual/www/domains/digitalight.cz/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/SmartSlider3Platform.php(19): Nextend\SmartSlider3\Platform\WordPress\SmartSlider3PlatformWordPress->start() #2 /data/web/virtuals/230707/virtual/www/domains/digitalight.cz/wp-content/plugins/nextend-smart-slider3-pro/Nextend/Framework/Pattern/SingletonTrait.php(12): Nextend\SmartSlider3\Platform\SmartSlider3Pla in /data/web/virtuals/230707/virtual/www/domains/digitalight.cz/wp-content/plugins/nextend-smart-slider3-pro/Nextend/SmartSlider3/Platform/WordPress/Widget/WidgetHelper.php on line 21