media_type="text/event-stream",
                    background=solved_result.background_tasks,
                )
                response.headers["Cache-Control"] = "no-cache"
                # For Nginx proxies to not buffer server sent events
                response.headers["X-Accel-Buffering"] = "no"
                response.headers.raw.extend(solved_result.response.headers.raw)
            elif is_json_stream: