.scala:000)  at org.apache.spark.sql.SparkSession$$anonfun$0.apply(SparkSession.scala:000)  at org.apache.spark.sql.SparkSession$$anonfun$0.apply(SparkSession.scala:000)  at scala.collection.Iterator$$anon$00.next(Iterator.scala:000) at scala.collection.Iterator$$anon$00.next(Iterator.scala:000) 