Custom Sidebars discontinued

By Ms. Cat White
January 2, 2021, 6:30 pm EST

How do we handle this update?

"Custom Sidebars Notice
Starting from version 5.7, WordPress will be using Gutenberg's block-based Widget Screen. Custom Sidebars is not compatible due to the fact that once Full Site Editing is in place, such plugins will not be required anymore. Therefore Custom Sidebars has been discontinued. If you have existing sidebars that you need to modify, you can switch back to a legacy Widgets screen by adding remove_theme_support( 'widgets-block-editor' ); in your theme's functions.php file. You can read more about this here."