WeWeb OpenAI Extension - Edge Function returned a non-2xx status code at Object.invokeEdgeFunction

I am new to WeWeb and not a developer. Added OpenAI extension with the key. To test the prompt, I add a button in a page for the workflow to fetch the response for the prompt. The first step fails with an error message:

Edge Function returned a non-2xx status code at Object.invokeEdgeFunction

Is WeWeb depending on Supabase for sending the prompt? How do I resolve the error?