Hard to decipher RunTimeError when serving lumen ai

[MarcSkovMadsen]

I'm on the main branch having run uv pip install -e .[ai-openai].

When we try to run the blog post example lumen-ai serve https://datasets.holoviz.org/windturbines/v1/windturbines.parq --show we get

RuntimeError: No provider detected. Please specify a provider with --provider and an API key with --api-key, set an environment variable with the API key, or specify a custom endpoint with --provider-endpoint.
ERROR: No provider detected. Please specify a provider with --provider and an API key with --api-key, set an environment variable with the API key, or specify a custom endpoint with --provider-endpoint.

This error message is 1) doubled increasing the complexity and 2) is quite hard to decipher. This is probably the error message that will be most shown to users. Please make it super easy to understand and to solve. Thanks.