title: Use Flink in my IDEA, but run error: java.lang.NoSuchMethodError: scala.Predef$.ArrowAssoc，how to configure my scala version in the intelliJ?
body: <pre><code>Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
      at akka.actor.setup.ActorSystemSetup$$anonfun$apply$1.apply(ActorSystemSetup.scala:36)
      at akka.actor.setup.ActorSystemSetup$$anonfun$apply$1.apply(ActorSystemSetup.scala:36)
      at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
      at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
      at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
      at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:34)
      at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
      at scala.collection.AbstractTraversable.map(Traversable.scala:105)
      at akka.actor.setup.ActorSystemSetup$.apply(ActorSystemSetup.scala:36)
      at akka.actor.setup.ActorSystemSetup$.create(ActorSystemSetup.scala:42)
      at akka.actor.RobustActorSystem$.create(RobustActorSystem.scala:55)
      at org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:125)
      at org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:113)
      at org.apache.flink.runtime.akka.AkkaUtils.createActorSystem(AkkaUtils.scala)
      at org.apache.flink.runtime.minicluster.MiniCluster.createRpcService(MiniCluster.java:758)
      at org.apache.flink.runtime.minicluster.MiniCluster.start(MiniCluster.java:257)
      at org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:120)
  </code></pre>