Where is caddy certificate file?(setup using snaps)

I’m setup following this guide.
docs.rocket.chat/installation/snaps/autossl

Where is caddy’s certificate files?(.key, .crt)
Please teach the saved path.

Solved my self.

/root/snap/rocketchat-server/current/.caddy/acme/acme-v02.api.letsencrypt.org/sites/<domain_name>/<domain_name>{.crt,.key}

Exist crt and key certificate files.