Issue using Gemini image generation from Firebase Docs

[rudikx6]

Hi guys,

I’m trying to follow the example from the Firebase docs:
https://firebase.google.com/docs/ai-logic/generate-images-gemini?hl=de&authuser=0&api=dev#text-to-image

I saw that the example uses the model gemini-2.0-flash-preview-image-generation, so I gave it a try as well.

However, the API returns the following error:
UnimplementedError: inlineData content part not yet supported

I also tested a basic text-only response (no image), and that works fine – so the setup seems okay in general.

My question: Has anyone successfully used this model for image generation? Am I missing something?

Thanks!