Error: Gemini API operation failed: operation=models/gemini-2.5-pro-preview-06-05:generateContent, status_code=404, response={ "error": { "code": 404, "message": "models/gemini-2.5-pro-preview-06-05 is not found for API version v1beta, or is not supported for generateContent. Call ListModels to see the list of available models and their supported methods.", "status": "NOT_FOUND" } }