[
  {
    "expression": "ts_Mean(ts_mean(close - delay(close,1),5) / atr(15), 30)",
    "time_consuming": 6.7,
    "formatted_time": "6.70秒",
    "alpha_id": "/",
    "status": "error",
    "description": "Attempted to use inaccessible or unknown operator \"delay\""
  }
]