Matterbridge file configuration location

What type of hardware are you using: Old laptop or computer
What YunoHost version are you running: 12.1.5.1 (testing).
What app is this about: matterbidge

Describe your issue

I’m looking to create a bridge between Discord and XMPP with Matterbridge.

I’ve created my Discord bot, started to make the configuration file here: /opt/yunohost/matterbridge/matterbridge.toml (as indicated on the yunohost app)

I don’t have a “matterbridge” folder in the /opt/yunohost/ folder, so I created it … and it doesn’t do anything

I do have a “Matterbridge” service running, I’ve tried stopping and restarting the service. I have this log below.

There seems to be a chan irc configured whereas my configuration file doesn’t have one. So there must be a configuration file somewhere, but I don’t know where.

any ideas ?

Thank you

Share relevant logs or error messages