Flink SQL Result field does not match requested type error on LocalDateTime

Question

When i group the below select it getting type maching error. I already try to CAST as TIMESTAMP and try to change POJOs LocalDateTime type. Most of the sample codes converts as Row.class could not find any custom class example.

SELECT name, MIN(price) AS minPrice, MAX(price) AS maxPrice, AVG(price) AS avarage, COUNT(name) as sayi, TUMBLE_START(rowtime, INTERVAL '5' SECOND) AS zaman FROM STOCK GROUP BY TUMBLE(rowtime, INTERVAL '5' SECOND), name

Thrown Error:

Exception in thread "main" org.apache.flink.table.api.TableException: Result field 'zaman' does not match requested type. Requested: GenericType<java.time.LocalDateTime>; Actual: LocalDateTime

Code:

    tableEnvironment.registerDataStream("STOCK", messageStream, "name, price, rowtime.rowtime");

    Table result = tableEnvironment.sqlQuery(
            "SELECT name, MIN(price) AS minPrice, MAX(price) AS maxPrice, AVG(price) AS avarage, COUNT(name) as sayi, TUMBLE_START(rowtime, INTERVAL '5' SECOND) AS zaman FROM STOCK GROUP BY TUMBLE(rowtime, INTERVAL '5' SECOND), name");

    result.printSchema();

    FlinkKafkaProducer011<String> myProducer = new FlinkKafkaProducer011<String>(kp.getProducerProperties().getProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG),
            "STOCKGROUP", new SimpleStringSchema());

    myProducer.setWriteTimestampToKafka(true);

    DataStream<Tuple2<Boolean, StockGroup>> stream = tableEnvironment.toRetractStream(result, StockGroup.class);

    stream.map(x -> x.f1.toString()).addSink(myProducer);

StockGroup.class POJO;

public String name;
public Double minPrice;
public Double maxPrice;
public Double avarage;
public Long sayi;
public LocalDateTime zaman;

Printed Schema;

root
 |-- name: STRING
 |-- minPrice: DOUBLE
 |-- maxPrice: DOUBLE
 |-- avarage: DOUBLE
 |-- sayi: BIGINT NOT NULL
 |-- zaman: TIMESTAMP(3) *ROWTIME*