wordpress deactivate widgets gutenberg

1// Add to your functions.php theme file:
2
3// Disables the block editor from managing widgets in the Gutenberg plugin.
4add_filter( 'gutenberg_use_widgets_block_editor', '__return_false', 100 );
5// Disables the block editor from managing widgets.
6add_filter( 'use_widgets_block_editor', '__return_false' );