bytedance/deer-flow · error · HTTPException

Failed to delete custom skill: {str(e)}

Error message

Failed to delete custom skill: {str(e)}

What it means

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

Source

Thrown at backend/app/gateway/routers/skills.py:331

            history_meta={
                "action": "human_delete",
                "author": "human",
                "thread_id": None,
                "file_path": SKILL_MD_FILE,
                "prev_content": None,
                "new_content": None,
                "scanner": {"decision": "allow", "reason": "Deletion requested."},
            },
        )
        await refresh_user_skills_system_prompt_cache_async(get_effective_user_id())
        return {"success": True}
    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 delete custom skill %s: %s", skill_name, e, exc_info=True)
        raise HTTPException(status_code=500, detail=f"Failed to delete custom skill: {str(e)}")


@router.get("/skills/custom/{skill_name}/history", response_model=CustomSkillHistoryResponse, summary="Get Custom Skill History")
async def get_custom_skill_history(skill_name: str, request: Request, config: AppConfig = Depends(get_config)) -> CustomSkillHistoryResponse:
    await require_admin_user(request, detail=_ADMIN_REQUIRED_DETAIL)
    try:
        skill_name = skill_name.replace("\r\n", "").replace("\n", "")

        def _read_history() -> list[dict] | None:
            # Worker thread: storage construction, the existence probes, and the
            # history-file read are blocking filesystem IO that must stay off the
            # event loop. None signals 404 to the caller.
            storage = _get_user_skill_storage(config)
            if not storage.custom_skill_exists(skill_name) and not storage.get_skill_history_file(skill_name).exists():
                return None
            return storage.read_history(skill_name)

        history = await asyncio.to_thread(_read_history)

View on GitHub (pinned to 1dd6ba1acb)

Solutions

1. Check the Gateway logs for the underlying delete error.
2. Verify the custom skill exists and no process holds locks on its directory, then retry.

When it happens

Trigger: Thrown at backend/app/gateway/routers/skills.py:331 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/137853499e72d471. Report an issue: GitHub.