WebDav returning a 404 in logs.

[marbuser]

This specifically happens with this extension. I've tested it with another program that supports WebDav and it works fine.

I'm using XenForo + an extension to enable WebDav, and it uses a URL format like so;
http://user:password@forum.dev/admindav.php

When inputting this in my workspace like so;

{
  "folders": [
    {
      "uri": "webdav://user:password@forum.dev/admindav.php",
      "name": "XenForo WebDav"
    }
  ]
}

It doesn't work and returns this error in the logs;

TRACE fs.webdav.webdavfilesystem.forconnection() - [07/Jul/2019:15:30:30 +0000] "(Error) HTTP error : 404 - Not Found