Error while trying to use XRC

[Severin]

You have to configure it in networks.json, which is located at the place where dfx info networks-json-path points you to. It follows the schema that you can print with dfx schema --for networks. My networks.json to use a system subnet looks like this:

{
  "local": {
      "bind": "127.0.0.1:8080",
      "type": "ephemeral",
      "replica": {
        "subnet_type": "system"
      }
    }
}