Did you see any other entries like “device failed to update mesh…” or "failed to update routing table…?
In that link above, devices that continually fail to assign new route have proven to me to be dead and need to be added back. With the old hub and app, that was painful, but now there’s a Replace Device option (under Edit Device). It works because I’ve already had to use it. Compared to the “old way”, it was extremely simple and fast.