ProphetTrainBatchOp Error

I tried the example code of ProphetTrainBatch and got this unclassified error.

```
from pyalink.alink import *

import pandas as pd

useLocalEnv(1)

import time, datetime
import numpy as np
import pandas as pd

data = pd.DataFrame([
[1, datetime.datetime.fromtimestamp(1), 10.0],
[1, datetime.datetime.fromtimestamp(2), 11.0],
[1, datetime.datetime.fromtimestamp(3), 12.0],
[1, datetime.datetime.fromtimestamp(4), 13.0],
[1, datetime.datetime.fromtimestamp(5), 14.0],
[1, datetime.datetime.fromtimestamp(6), 15.0],
[1, datetime.datetime.fromtimestamp(7), 16.0],
[1, datetime.datetime.fromtimestamp(8), 17.0],
[1, datetime.datetime.fromtimestamp(9), 18.0],
[1, datetime.datetime.fromtimestamp(10), 19.0]
])

source = dataframeToOperator(data, schemaStr='id int, ts timestamp, val double', op_type='batch')

prophetModel = source.link(\
ProphetTrainBatchOp()\
.setTimeCol("ts")\
.setValueCol("val")
)

ProphetPredictBatchOp()\
.setValueCol("data")\
.setPredictNum(4)\
.setPredictionCol("pred")\
.linkFrom(
prophetModel,
source.link(
GroupByBatchOp()
.setGroupByPredicate("id")
.setSelectClause("id, mtable_agg(ts, val) as data")
)
)\
.print()
```

Reference: https://www.yuque.com/pinshu/alink_doc/prophettrainbatchop

`Caused by: ERROR: 0x0860080000001001-Unclassified error: Failed to call addValue with value: 1,"{""data"":{""ts"":[""1970-01-01 08:00:01.0"",""1970-01-01 08:00:02.0"",""1970-01-01 08:00:03.0"",""1970-01-01 08:00:04.0"",""1970-01-01 08:00:05.0"",""1970-01-01 08:00:06.0"",""1970-01-01 08:00:07.0"",""1970-01-01 08:00:08.0"",""1970-01-01 08:00:09.0"",""1970-01-01 08:00:10.0""],""val"":[10.0,11.0,12.0,13.0,14.0,15.0,16.0,17.0,18.0,19.0]},""schema"":""ts TIMESTAMP,val DOUBLE""}",.
at com.alibaba.alink.common.lazy.LazyEvaluation.addValue(LazyEvaluation.java:45)
at com.alibaba.alink.python.utils.OperatorCsvCollector.lambda$null$0(OperatorCsvCollector.java:62)
at com.alibaba.alink.operator.batch.BatchOperator.lambda$lazyCollect$5(BatchOperator.java:646)
at io.reactivex.rxjava3.internal.observers.LambdaObserver.onNext(LambdaObserver.java:63)
at io.reactivex.rxjava3.subjects.ReplaySubject$UnboundedReplayBuffer.replay(ReplaySubject.java:791)
at io.reactivex.rxjava3.subjects.ReplaySubject.onNext(ReplaySubject.java:365)
at com.alibaba.alink.common.lazy.LazyEvaluation.addValue(LazyEvaluation.java:42)
... 14 more`

I'd appreciate for it if anyone could help me to figure this out.

Reproduce the documented ProphetTrainBatchOp example, then trace the failure through LazyEvaluation.addValue, OperatorCsvCollector, and BatchOperator.lazyCollect. Compare the ProphetTrainBatchOp, ProphetPredictBatchOp, and GroupByBatchOp data path, and confirm the example completes without the unclassified addValue error.

Written by the indexing model from the issue text.