default-node configuration not working

[maver1ck]

I'm trying to set up zk-web with default node configuration.
I'm using tobilg/zookeeper-webui:latest docker image
My config is:

{
 :server-port 8080
 :users {"admin" "admin"}
 :default-node "zk-zookeeper:2181"
}

Then ui looks like this:

What I'm doing wrong ?