Fatal error: Uncaught Error: Class 'Elementor\Widget_Base' not found in /home/www/sieml/wp-content/plugins/the-events-calendar/src/Events/Integrations/Plugins/Elementor/Widgets/Contracts/Abstract_Widget.php:24 Stack trace: #0 {main} thrown in /home/www/sieml/wp-content/plugins/the-events-calendar/src/Events/Integrations/Plugins/Elementor/Widgets/Contracts/Abstract_Widget.php on line 24