Have you tried to ask at forum the server hosts? It is linked from that server’s homepage and is the only way to contact them as far as I know.
This threads and a few others have details. I’ve also added a tag to this post that will find more (guessing that was the server where the original question asker was working).
Hope that helps, and if someone does make contact and gets feedback, posting back the solution would be helpful here, too
Update: I just did a search at that forum and see some open questions about this same issue. Maybe also report the problem to that same thread? They are likely working on it but more user feedback seems helpful. Xref: LEfSe issues and errors - LEfSe - The bioBakery help forum