Wordpress mình bị lỗi Notice: register_rest_route was called incorrectly

Mình sài Wordpress 5.5, và bị báo lỗi này

Notice: register_rest_route was called incorrectly. The REST API route definition for newspack-blocks/v1/video-playlist is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.) in /home/public_html/wp-includes/functions.php on line 5225