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java.lang.NoSuchMethodError: scala.Predef$.$scope()Lscala/xml/TopScope$;	at org.apache.spark.ui.jobs.StagePage.(StagePage.scala:44)	at org.apache.spark.ui.jobs.StagesTab.(StagesTab.scala:34)	at org.apache.spark.ui.SparkUI.(SparkUI.scala:62)	at org.apache.spark.ui.SparkUI$.create(SparkUI.scala:215)	at org.apache.spark.ui.SparkUI$.createLiveUI(SparkUI.scala:157)	at org.apache.spark.SparkContext.(SparkContext.scala:443)	at org.apache.spark.SparkContext.(SparkContext.scala:149)	at org.apache.spark.SparkContext.(SparkContext.scala:185)	at org.apache.spark.api.java.JavaSparkContext.(JavaSparkContext.scala:92)	at com.spark.test.WordCountTest.main(WordCountTest.java:25)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)