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java.lang.ClassNotFoundException: $line11.$read$	at java.lang.ClassLoader.findClass(Unknown Source)	at org.apache.spark.util.ParentClassLoader.findClass(ParentClassLoader.scala:26)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at org.apache.spark.util.ParentClassLoader.loadClass(ParentClassLoader.scala:30)	at org.apache.spark.repl.ExecutorClassLoader.findClass(ExecutorClassLoader.scala:60)	at java.lang.ClassLoader.loadClass(Unknown Source)	at java.lang.ClassLoader.loadClass(Unknown Source)	at $line12.$read$$iwC$$iwC$$iwC$$iwC$$anonfun$2.apply(:19)	at $line12.$read$$iwC$$iwC$$iwC$$iwC$$anonfun$2.apply(:19)	at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)	at scala.collection.Iterator$$anon$1.next(Iterator.scala:853)	at scala.collection.Iterator$$anon$1.head(Iterator.scala:840)	at org.apache.spark.sql.execution.ExistingRdd$$anonfun$productToRowRdd$1.apply(basicOperators.scala:181)	at org.apache.spark.sql.execution.ExistingRdd$$anonfun$productToRowRdd$1.apply(basicOperators.scala:176)	at org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559)	at org.apache.spark.rdd.RDD$$anonfun$12.apply(RDD.scala:559)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)	at org.apache.spark.rdd.MappedRDD.compute(MappedRDD.scala:31)	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)	at org.apache.spark.rdd.RDD.iterator(RDD.scala:229)	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111)	at org.apache.spark.scheduler.Task.run(Task.scala:51)	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:183)	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)