java.lang.ClassCastException: org.apache.spark.SparkContext$$anonfun$36 cannot be cast to org.apache.spark.ShuffleDependency

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org.apache.spark.SparkContext$$anonfun$36 cannot be cast to org.apache.spark.ShuffleDependency
java.lang.ClassCastException: org.apache.spark.SparkContext$$anonfun$36 cannot be cast to org.apache.spark.ShuffleDependency
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:64)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
at org.apache.spark.scheduler.Task.run(Task.scala:88)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

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