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java.lang.NullPointerException at org.apache.spark.sql.SparkSession.sessionState$lzycompute(SparkSession.scala:112) at org.apache.spark.sql.SparkSession.sessionState(SparkSession.scala:110) at org.apache.spark.sql.Dataset$.ofRows(Dataset.scala:63) at org.apache.spark.sql.SparkSession.createDataFrame(SparkSession.scala:328) at Main.lambda$main$e7daa47c$1(Main.java:62) at org.apache.spark.api.java.JavaPairRDD$$anonfun$toScalaFunction$1.apply(JavaPairRDD.scala:1028) at scala.collection.Iterator$$anon$11.next(Iterator.scala:409) at org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:148) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:79) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:47) at org.apache.spark.scheduler.Task.run(Task.scala:85) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)