I’m using the package Blend Sitemap (Our.Umbraco.Blend.Sitemap, 13.0.5) with Umbraco 13 (13.7.0) but getting an error requesting /sitemap.xml:
Exception: Failed to get node at /. This might be because you're trying to publish a variant, with no domains setup
Umbraco.Cms.Infrastructure.PublishedCache.ContentCache.ApplyHideTopLevelNodeFromPath(IPublishedContent content, IList<string> segments, bool preview)
Strangely enough, after republishing the root node with descendants, the sitemap is working until the application is restarted…