运行OffsetApp03这个类的时候出现

Exception in thread "main" java.lang.NoSuchMethodError: io.netty.buffer.PooledByteBufAllocator.defaultUseCacheForAllThreads()Z
at org.apache.spark.network.util.NettyUtils.createPooledByteBufAllocator(NettyUtils.java:168)
at org.apache.spark.network.util.NettyUtils.getSharedPooledByteBufAllocator(NettyUtils.java:138)
at org.apache.spark.network.server.TransportServer.<init>(TransportServer.java:74)
at org.apache.spark.network.TransportContext.createServer(TransportContext.java:157)
at org.apache.spark.rpc.netty.NettyRpcEnv.startServer(NettyRpcEnv.scala:125)
at org.apache.spark.rpc.netty.NettyRpcEnvFactory.$anonfun$create$1(NettyRpcEnv.scala:489)
at org.apache.spark.rpc.netty.NettyRpcEnvFactory.$anonfun$create$1$adapted(NettyRpcEnv.scala:488)
at org.apache.spark.util.Utils$.$anonfun$startServiceOnPort$2(Utils.scala:2256)
at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:158)
at org.apache.spark.util.Utils$.startServiceOnPort(Utils.scala:2248)
at org.apache.spark.rpc.netty.NettyRpcEnvFactory.create(NettyRpcEnv.scala:493)
at org.apache.spark.rpc.RpcEnv$.create(RpcEnv.scala:57)
at org.apache.spark.SparkEnv$.create(SparkEnv.scala:266)
at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:189)
at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:267)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:442)
at org.apache.spark.streaming.StreamingContext$.createNewSparkContext(StreamingContext.scala:851)
at org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:85)
at com.imooc.bigdata.offset.OffsetApp03$.main(OffsetApp03.scala:22)
at com.imooc.bigdata.offset.OffsetApp03.main(OffsetApp03.scala)
Disconnected from the target VM, address: '127.0.0.1:64956', transport: 'socket'

貌似是显示是netty的版本冲突，但我搜遍了项目里的代码貌似也没有netty相关的pom包，您的代码里有涉及netty的东西吗？（我的Kafka已能正常启动，Kafka的IP和端口也没有写错，kafka里也有my-replicated-topic这个topic）请问是什么原因呢？