bytedance/deer-flow · error · HTTPException

{error} (fallback: Scheduled task trigger failed)

Error message

{error} (fallback: Scheduled task trigger failed)

What it means

Error "{error} (fallback: Scheduled task trigger failed)" thrown in bytedance/deer-flow.

Source

Thrown at backend/app/gateway/routers/scheduled_tasks.py:268

    return updated


@router.post("/scheduled-tasks/{task_id}/trigger")
@require_permission("threads", "write")
async def trigger_scheduled_task(task_id: str, request: Request):
    repo = get_scheduled_task_repo(request)
    service = get_scheduled_task_service(request)
    user = await get_optional_user_from_request(request)
    if user is None:
        raise HTTPException(status_code=401, detail="Authentication required")
    task = await repo.get(task_id, user_id=str(user.id))
    if task is None:
        raise HTTPException(status_code=404, detail="Scheduled task not found")
    result = await service.dispatch_task(task, now=datetime.now(UTC), trigger="manual")
    if result["outcome"] == "conflict":
        raise HTTPException(status_code=409, detail=result["error"] or "Scheduled task trigger conflicted with an active run")
    if result["outcome"] == "failed":
        raise HTTPException(status_code=502, detail=result["error"] or "Scheduled task trigger failed")
    return {"id": task_id, "triggered": True}


@router.delete("/scheduled-tasks/{task_id}")
@require_permission("threads", "write")
async def delete_scheduled_task(task_id: str, request: Request):
    repo = get_scheduled_task_repo(request)
    user = await get_optional_user_from_request(request)
    if user is None:
        raise HTTPException(status_code=401, detail="Authentication required")
    deleted = await repo.delete(task_id, user_id=str(user.id))
    if not deleted:
        raise HTTPException(status_code=404, detail="Scheduled task not found")
    return {"id": task_id, "deleted": deleted}


@router.get("/scheduled-tasks/{task_id}/runs")
@require_permission("threads", "read")

View on GitHub (pinned to 1dd6ba1acb)

Solutions

1. Check the Gateway logs for the underlying trigger exception and fix the named cause.
2. Verify the scheduled task's model, thread, and context configuration are valid, then retry.

When it happens

Trigger: Thrown at backend/app/gateway/routers/scheduled_tasks.py:268 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/ba9cf5d3ba17f05a. Report an issue: GitHub.