请教group windows的order by问题

Beginne mit der bereitgestellten SQL-Abfrage und der gemeldeten StreamExecSort.scala-Ausnahme, und verfolge anschließend den Planner-Pfad durch StreamExecSort.scala und TableEnvironmentImpl.java. Reproduziere das gruppierte Ein-Sekunden-Fenster mit der beispielhaften Kafka-Eingabe und bestimme, ob ORDER BY ROWTIME in dieser Abfrageform unterstützt wird. Erledigt ist die Aufgabe, wenn die unterstützte Syntax oder Einschränkung festgestellt und klar kommuniziert wurde.

需要根据1秒的window中的ROWTIME进行排序，但是报如下错误：
Exception in thread "main" org.apache.flink.table.api.TableException: Sort on a non-time-attribute field is not supported.
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlanInternal(StreamExecSort.scala:118)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlanInternal(StreamExecSort.scala:59)
at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:58)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlan(StreamExecSort.scala:59)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToTransformation(StreamExecSink.scala:184)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlanInternal(StreamExecSink.scala:91)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlanInternal(StreamExecSink.scala:48)
at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:58)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlan(StreamExecSink.scala:48)
at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:60)
at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:59)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at org.apache.flink.table.planner.delegation.StreamPlanner.translateToPlan(StreamPlanner.scala:59)
at org.apache.flink.table.planner.delegation.PlannerBase.translate(PlannerBase.scala:153)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.translate(TableEnvironmentImpl.java:682)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.insertIntoInternal(TableEnvironmentImpl.java:355)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.insertInto(TableEnvironmentImpl.java:334)
at com.dtstack.flink.sql.exec.FlinkSQLExec.sqlUpdate(FlinkSQLExec.java:94)
at com.dtstack.flink.sql.exec.ExecuteProcessHelper.sqlTranslation(ExecuteProcessHelper.java:235)
at com.dtstack.flink.sql.exec.ExecuteProcessHelper.getStreamExecution(ExecuteProcessHelper.java:169)
at com.dtstack.flink.sql.Main.main(Main.java:41)
at com.dtstack.flink.sql.launcher.LauncherMain.main(LauncherMain.java:140)

我的脚本如下：
CREATE TABLE MyTable(
name varchar,
after varchar,
jstime bigint,
WATERMARK FOR jstime AS withOffset(jstime,1000)
)WITH(
type ='kafka10',
bootstrapServers ='pro1:9092',
kafka.auto.offset.reset ='latest',
topic ='test1',
parallelism ='1',
sourcedatatype ='json'
);
CREATE TABLE result_user_info(
name varchar,
after varchar,
jstime bigint,
ROWTIME datetime
)WITH(
type ='console',
parallelism ='1'
);
insert into result_user_info(name,after,jstime,ROWTIME) (select name ,
after ,
jstime,ROWTIME from MyTable
group by name,after,jstime,TUMBLE(ROWTIME, INTERVAL '1' SECOND),ROWTIME order by ROWTIME)

kafka消息：
{"name":"testname","jstime":3119988231,"after":"{"khh":"我是khh0003"}"}
想请教是否是语法写错了，还是有别的排序方法，多谢