Can't mount tailscale taildrive

I followed the taildrive guide. I can see my nixos drive in macos, but the following happens when trying to get mount my mac drive on nixos :

> sudo mount -t davfs http://100.100.100.100:8080 /mnt/tailscale

Please enter the username to authenticate with server
http://100.100.100.100:8080 or hit enter for none.
  Username:
Please enter the password to authenticate user  with server
http://100.100.100.100:8080 or hit enter for none.
  Password:
mount.davfs: can't read user data base

This is my access configuration:

{
{
"grants": [{
"src": ["*"],
"dst": ["*"],
"ip":  ["*"],
"app": {
"tailscale.com/cap/drive": [{
"shares": ["*"],
"access": "rw",
}],
},
},

"ssh": [
// Allow all users to SSH into their own devices in check mode.
// Comment this section out if you want to define specific restrictions.
{
"action": "check",
"src":    ["autogroup:member"],
"dst":    ["autogroup:self"],
"users":  ["autogroup:nonroot", "root"],
},
],

"tagOwners": {},

"nodeAttrs": [
{
"target": ["*"],
"attr":   ["drive:access", "drive:share"],
},
],
}