Fatal error: Uncaught Error: Undefined class constant 'ALERT' in /wp-content/plugins/happy-elementor-addons/extensions/custom-mouse-cursor.php:134 Stack trace: #0 /wp-content/plugins/happy-elementor-addons/extensions/custom-mouse-cursor.php(124): Happy_Addons\Elementor\Extension\Custom_Mouse_Cursor->add_content_controls(Object(Elementor\Element_Section)) #1 /wp-includes/class-wp-hook.php(289): Happy_Addons\Elementor\Extension\Custom_Mouse_Cursor->register_controls(Object(Elementor\Element_Section)) #2 /wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #3 /wp-includes/plugin.php(484): WP_Hook->do_action(Array) #4 /wp-content/plugins/elementor/includes/base/controls-stack.php(1596): do_action('elementor/eleme...', Object(Elementor\Element_Section), Array) #5 /wp-content/plugins/elementor/includes/elements/section.php(525): Elementor\Controls_Stack->end_controls_section() #6 /wp-content/plugins/elementor/includes/base/controls-stack.php(2284): Elementor\Element_Section->register_controls() #7 /wp-conten in /wp-content/plugins/happy-elementor-addons/extensions/custom-mouse-cursor.php on line 134