can't access it in gnome boxes in fedora guests

[changemenemo]

Hi,

I don't know if it is the right place to report it since I don't know if it's the official repo for spice-webdavd or if it is just a fork.

My host: fedora 31 workstation
guests: fedora 31workstation / ubuntu 19.10

I've installed on both system spcie-webdavd. I've shared a different folder for both and nothing.
Or it is not detected in the file manager and when it is, then it tells me there is an http problem with it.
So what's the manual mounting cli line to test it? And I can't find an actual tutorial anywhere to actually have more information about spice-webdavd and know how it works etc... Which is quite disturbing. So is there any firewall rule That I should open on the host for example or anything alike?