Description of problem:
I test virt-viewer's folder sharing on fedora 30 
virt-viewer version: 8.0-1.fc30
guest vm : windows xp

I follow the instruction on website below:
https://www.spice-space.org/spice-user-manual.html
1. Add spiceport "org.spice-space.webdav.0" use virt-manager
2. Install spice-webdavd-x86-2.2.msi on guest windows xp
3. Enable remote-viewer's folder sharing ,the default folder is public

After did that , noting happen, there isn't new drive mapped on guest

So , i run command "spice-webdavd --no-service -p 9876" in cmd to debug it, spice-webdavd.exe output error text like:
map_drive error 1203 . 

So , i run map-drive.bat in cmd , it output some error text like:
net use * http://localhost:9843
"System error 67 has occured
The network name cannot be found"

I use "netstat -an" to check if localhost:9843 exist, the result is : yes ,it exist.
I disabled the firewall, it's still not working.