The keys.yml is null

[xuht724]

When I run the guidance as below:

cd ~/ceremonyclient/node
GOEXPERIMENT=arenas go run ./...

The output is

Creating config directory .config
Generating default config...
Generating random host key...
Generating keystore key...
Saving config...
Clearing test data...
Loading ceremony state and starting node...
{"level":"info","ts":171620352

But the data in keys.yml is :

null

The bug has been issued by issue-100, however, it seems that there is no available method to solve.