HKUDS/nanobot · error · ImageGenerationError

StepFun image generation failed: {detail}

Error message

StepFun image generation failed: {detail}

What it means

Error "StepFun image generation failed: {detail}" thrown in HKUDS/nanobot.

Source

Thrown at nanobot/providers/image_generation.py:1742

        refs = list(reference_images or [])
        if refs and "1x" in model:
            body["style_reference"] = {
                "source_url": image_path_to_data_url(refs[0]),
            }

        body.update(self.extra_body)

        response = await self._http_post(
            f"{self.api_base}/images/generations",
            headers=headers,
            body=body,
        )

        try:
            response.raise_for_status()
        except httpx.HTTPStatusError as exc:
            detail = response.text[:500]
            raise ImageGenerationError(
                f"StepFun image generation failed: {detail}"
            ) from exc

        payload = response.json()
        images = _stepfun_images_from_payload(payload)

        self._require_images(images, payload)

        return GeneratedImageResponse(images=images, content="", raw=payload)


def _stepfun_size(
    aspect_ratio: str | None,
    image_size: str | None,
) -> str:
    """Resolve aspect ratio / image_size to StepFun size string.

    StepFun expects ``WIDTHxHEIGHT`` (note: width x height, not the more

View on GitHub (pinned to 42f37dc4c0)

When it happens

Trigger: Thrown at nanobot/providers/image_generation.py:1742 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/nanobot@42f37dc4c0 (2026-08-26). Data as JSON: /api/errors/1883f7f6c0546247. Report an issue: GitHub.