[
  {
    "expression": "reverse(divide(ts_covariance(ts_rank(close,10),ts_rank(volume,20),20),add(ts_std_dev(volume,20),1e-5)))",
    "time_consuming": 6.7,
    "status": "error",
    "timestamp": "2025-11-25 15:24:00",
    "message": "Unexpected character 'e' near \"lume,20),1e-5)))\""
  }
]