Problem if no classic-editor is installed

We use toolset for custom post types and custom fields. Also we use the Block Editor (aka ‘Gutenberg’).

We get the following error if we try to edit a custom post with ‘WP Post Expires’ enabled:

TypeError: Cannot read property 'xn-wppe-expiration' of undefined
    at Component (https://<SITE_URL>/wp-content/plugins/wp-post-expires/assets/js/plugin-scripts.js?ver=1.2.3:5:16)

Problem is, we do not have the classic editor installed
My quick’n dirty fix in wp-post-expires.php (line 90) is to use use_block_editor_for_post() function also:

    public function gutenbergOrClassic() {
        if(!is_plugin_active('classic-editor/classic-editor.php') && use_block_editor_for_post($_QUERY['post'])) {
            add_action('enqueue_block_editor_assets', [$this, 'loadScripts']);
        } elseif(is_admin()) {
          $this->loadScriptsClassic();
        }
    }

What do you guys think?