Hey,
i developed some widgets to integrate with Elementor existent ones...
When i updated Elementor, the error below appeared

Fatal error: Uncaught Error: Undefined class constant 'CHECKBOX' in /var/www/sites/vivatek/wp-content/themes/websolution-complete-theme/inc/classes/Elementor/Widgets/LightboxGallery.php:68 Stack trace: #0 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/base/controls-stack.php(471): WebSolution\CompleteTheme\Elementor\Widgets\LightboxGallery->_register_controls() #1 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/base/controls-stack.php(60): Elementor\Controls_Stack->_init_controls() #2 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/base/controls-stack.php(130): Elementor\Controls_Stack->get_controls() #3 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/css-file/global-css-file.php(75): Elementor\Controls_Stack->get_scheme_controls() #4 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/css-file/global-css-file.php(34): Elementor\Global_CSS_File->render_schemes_css() #5 /var/www/sites/vivatek/wp-content/plugins/elementor/includes/css-file/css-file.php(310): Elem in /var/www/sites/vivatek/wp-content/themes/websolution-complete-theme/inc/classes/Elementor/Widgets/LightboxGallery.php on line 68

I checked the old plugin version, file controls.php

Who should i blame for this? :D @KingYes @kobizz @matipojo
Please pay attention to not remove main functionalities instead of enhancing them.