The original code is this:
require_once( DIR . '/widgets/widget-video.php' );
\Elementor\Plugin::instance()->widgets_manager->register( new \TFVideo_Widget() );
I just put: /* before and */ after
The solution found was:
comment out this line of code in the file themesflat-addons-for-elementor.php
/*
require_once( __DIR__ . '/widgets/widget-video.php' );
\Elementor\Plugin::instance()->widgets_manager->register( new \TFVideo_Widget() );
*/
