[
  {
    "expression": "group_rank(ts_rank(close, 10)) - group_rank(ts_rank(volume, 10))",
    "time_consuming": 6.76,
    "status": "error",
    "timestamp": "2025-11-25 09:51:58",
    "message": "Invalid number of inputs : 1, should be exactly 2 input(s)"
  },
  {
    "expression": "group_std(ts_returns(close, 1), 5) * -1",
    "time_consuming": 6.79,
    "status": "error",
    "timestamp": "2025-11-25 09:53:27",
    "message": "Attempted to use inaccessible or unknown operator \"group_std\""
  },
  {
    "expression": "group_neutralize(ts_scale(close - vwap), sector)",
    "time_consuming": 6.54,
    "status": "error",
    "timestamp": "2025-11-25 09:54:53",
    "message": "Required attribute \"lookback\" must have a value"
  },
  {
    "expression": "ts_regression(volume, close, 10, 2)",
    "time_consuming": 6.56,
    "status": "error",
    "timestamp": "2025-11-25 09:55:00",
    "message": "Invalid number of inputs : 3, should be exactly 2 input(s)"
  },
  {
    "expression": "ts_max(ts_delta(vwap, 3), 5) - ts_min(ts_delta(vwap, 3), 5)",
    "time_consuming": 6.54,
    "status": "error",
    "timestamp": "2025-11-25 09:55:06",
    "message": "Attempted to use inaccessible or unknown operator \"ts_max\""
  },
  {
    "expression": "group_rank(ts_returns(close, 1)) * group_rank(market_cap)",
    "time_consuming": 12.66,
    "status": "error",
    "timestamp": "2025-11-25 09:55:19",
    "message": "Attempted to use inaccessible or unknown operator \"ts_returns\""
  },
  {
    "expression": "ts_sum(close - open, 5) / ts_std(close - open, 5)",
    "time_consuming": 6.66,
    "status": "error",
    "timestamp": "2025-11-25 09:55:25",
    "message": "Attempted to use inaccessible or unknown operator \"ts_std\""
  },
  {
    "expression": "group_rank(ts_rank(volume, 5)) * group_rank(ts_rank(close, 5))",
    "time_consuming": 6.58,
    "status": "error",
    "timestamp": "2025-11-25 09:55:32",
    "message": "Invalid number of inputs : 1, should be exactly 2 input(s)"
  },
  {
    "expression": "ts_corr(group_rank(close), group_rank(volume), 10)",
    "time_consuming": 6.52,
    "status": "error",
    "timestamp": "2025-11-25 09:55:39",
    "message": "Invalid number of inputs : 1, should be exactly 2 input(s)"
  },
  {
    "expression": "group_std(ts_returns(vwap, 1), 10) * -ts_returns(close, 1)",
    "time_consuming": 6.48,
    "status": "error",
    "timestamp": "2025-11-25 09:57:10",
    "message": "Attempted to use inaccessible or unknown operator \"group_std\""
  },
  {
    "expression": "ts_scale(ts_sum(volume * close, 10)) - ts_scale(ts_sum(volume, 10))",
    "time_consuming": 6.51,
    "status": "error",
    "timestamp": "2025-11-25 09:57:16",
    "message": "Required attribute \"lookback\" must have a value"
  },
  {
    "expression": "ts_regression(close, volume, 15, 1) * group_rank(market_cap)",
    "time_consuming": 6.53,
    "status": "error",
    "timestamp": "2025-11-25 09:58:47",
    "message": "Invalid number of inputs : 3, should be exactly 2 input(s)"
  },
  {
    "expression": "ts_delta(ts_mean(close, 10), 5) / ts_std(close, 10)",
    "time_consuming": 6.54,
    "status": "error",
    "timestamp": "2025-11-25 09:58:54",
    "message": "Attempted to use inaccessible or unknown operator \"ts_std\""
  },
  {
    "expression": "group_rank(ts_returns(close, 5)) - group_rank(ts_returns(volume, 5))",
    "time_consuming": 0.53,
    "status": "error",
    "timestamp": "2025-11-25 09:58:54",
    "message": "Attempted to use inaccessible or unknown operator \"ts_returns\""
  }
]