Exception in thread "main" java.lang.UnsupportedOperationException: No Encoder found for Any

Exception in thread "main" java.lang.UnsupportedOperationException: No Encoder found for Any
- field (class: "java.lang.Object", name: "_1")
- root class: "scala.Tuple3"
at org.apache.spark.sql.catalyst.ScalaReflection$.org$apache$spark$sql$catalyst$ScalaReflection$$serializerFor(ScalaReflection.scala:598)
at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$9.apply(ScalaReflection.scala:592)
at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$9.apply(ScalaReflection.scala:583)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.immutable.List.foreach(List.scala:381)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
at scala.collection.immutable.List.flatMap(List.scala:344)
at org.apache.spark.sql.catalyst.ScalaReflection$.org$apache$spark$sql$catalyst$ScalaReflection$$serializerFor(ScalaReflection.scala:583)
at org.apache.spark.sql.catalyst.ScalaReflection$.serializerFor(ScalaReflection.scala:425)
at org.apache.spark.sql.catalyst.encoders.ExpressionEncoder$.apply(ExpressionEncoder.scala:61)
at org.apache.spark.sql.Encoders$.product(Encoders.scala:274)
at org.apache.spark.sql.SQLImplicits.newProductEncoder(SQLImplicits.scala:47)
at wangsheng.sibat.highway.process$.main(process.scala:37)
at wangsheng.sibat.highway.process.main(process.scala)

上面是报错信息

val LineFlow = data.groupBy("InRoadNoInStationNo","OutRoadNoOutStationNo").count().map(s => (s(0),s(1),s(2))).toDF("InRoadNoInStationNo","OutRoadNoOutStationNo","count")这是我的代码
在网上看了一些相关的解决办法，都跟我的不一样。我觉得应该这里问题应该出在map上面

解决方法就是去掉中间的map

val LineFlow = data.groupBy("InRoadNoInStationNo","OutRoadNoOutStationNo").count().toDF("InRoadNoInStationNo","OutRoadNoOutStationNo","count")