5.5 error: register_rest_route called incorrectly

Hi! After upgrading to WordPress 5.5, I’m getting this error when I edit pages when EditorsKit is enabled:

Notice: register_rest_route was called <strong>incorrectly</strong>. The REST API route definition for <code>editorskit/v1/acf</code> is missing the required <code>permission_callback</code> argument. For REST API routes that are intended to be public, use <code>__return_true</code> as the permission callback. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 5.5.0.) in C:\Users\...\Local Sites\master\app\public\wp-includes\functions.php on line 5225

I’m running WordPress 5.5, Block Options 1.29.2.