Model-Addons Active, but none of the models available

[timothysparg]

It's quite possible that I'm making a silly mistake here given that I'm a new user, but for the life of me I don't know where I'm going wrong.

I have the Model-Addons Active, but when I try and use any of the included models I get an API KEY NOT VALID errror.

Error: [{
  "error": {
    "code": 400,
    "message": "API key not valid. Please pass a valid API key.",
    "status": "INVALID_ARGUMENT",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "reason": "API_KEY_INVALID",
        "domain": "googleapis.com",
        "metadata": {
          "service": "generativelanguage.googleapis.com"
        }
      },
      {
        "@type": "type.googleapis.com/google.rpc.LocalizedMessage",
        "locale": "en-US",
        "message": "API key not valid. Please pass a valid API key."
      }
    ]
  }
}

This is what I've been doing

I add it to my local-ui-assistant

but curiously when I look at the preview of my assistant I see the following

I would expect an API KEY to be pre-populated here, but it seems to be looking for one from me?