thanks, Aezaz for this good plugin, but I confirm the issue and it’s happened on my install, Elementor pro latest version 3.6
Fatal error: Uncaught Error: Class ‘Elementor\Scheme_Color’ not found in /home2/**Siteloaction**/wp-content/plugins/news-ticker-widget-for-elementor/elements/news-ticker-widget.php:187 Stack trace: #0 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/controls-stack.php(2280): Elementor\Elementor_NT_Widget->_register_controls() #1 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/controls-stack.php(494): Elementor\Controls_Stack->init_controls() #2 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/widget-base.php(177): Elementor\Controls_Stack->get_stack() #3 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/controls-stack.php(300): Elementor\Widget_Base->get_stack() #4 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/controls-stack.php(2369): Elementor\Controls_Stack->get_controls() #5 /home2/**Siteloaction**/wp-content/plugins/elementor/includes/base/controls-stack.ph in /home2/**Siteloaction**/wp-content/plugins/news-ticker-widget-for-elementor/elements/news-ticker-widget.php on line 187`