bytedance/deer-flow · error · HTTPException

Failed to roll back custom skill: {str(e)}

Error message

Failed to roll back custom skill: {str(e)}

What it means

Error "Failed to roll back custom skill: {str(e)}" thrown in bytedance/deer-flow.

Source

Thrown at backend/app/gateway/routers/skills.py:406

        }
        if scan.decision == "block":
            await asyncio.to_thread(storage.append_history, skill_name, history_entry)
            raise HTTPException(status_code=400, detail=f"Rollback blocked by security scanner: {scan.reason}")
        await asyncio.to_thread(storage.write_custom_skill, skill_name, SKILL_MD_FILE, target_content)
        await asyncio.to_thread(storage.append_history, skill_name, history_entry)
        await refresh_user_skills_system_prompt_cache_async(get_effective_user_id())
        return await _read_custom_skill_response(skill_name, config)
    except HTTPException:
        raise
    except IndexError:
        raise HTTPException(status_code=400, detail="history_index is out of range")
    except FileNotFoundError as e:
        raise HTTPException(status_code=404, detail=str(e))
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    except Exception as e:
        logger.error("Failed to roll back custom skill %s: %s", skill_name, e, exc_info=True)
        raise HTTPException(status_code=500, detail=f"Failed to roll back custom skill: {str(e)}")


@router.get(
    "/skills/{skill_name}",
    response_model=SkillResponse,
    summary="Get Skill Details",
    description="Retrieve detailed information about a specific skill by its name.",
)
async def get_skill(skill_name: str, config: AppConfig = Depends(get_config)) -> SkillResponse:
    try:
        skill_name = skill_name.replace("\r\n", "").replace("\n", "")
        skills = _get_user_skill_storage(config).load_skills(enabled_only=False)
        skill = next((s for s in skills if s.name == skill_name), None)

        if skill is None:
            raise HTTPException(status_code=404, detail=f"Skill '{skill_name}' not found")

        return _skill_to_response(skill)

View on GitHub (pinned to 1dd6ba1acb)

Solutions

1. Check the Gateway logs for the underlying rollback error.
2. Verify the target history entry exists and passes the security scan, then retry.

When it happens

Trigger: Thrown at backend/app/gateway/routers/skills.py:406 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bytedance/deer-flow@1dd6ba1acb (2026-08-14). Data as JSON: /api/errors/a28d2c46a6895598. Report an issue: GitHub.