Paths of certificates for the configurator addon

Hello, where exactly do I have to put certificate.pem and privkey.pem for the configurator addon of hassio?

I put them in the same directory of “configuration.yaml”, and used these options:
.
.
“certfile”: “certificate.pem”,
“keyfile”: “privkey.pem”,
.
.

but the configurator doesn’t find the files.
In addition, is it possible to specify an absolute path on the configurator? for example:

“certfile”: ": “/home/pi/certs/certificate.pem”

thanks