当我尝试sbt包在我下面的代码我得到这些以下错误
1.对象apache不是软件包org的成员
1.未找到：value SparkSession
我的Spark版本：2.4.4
我的Scala版本：2.11.12

我的构建.sbt

name := "simpleApp"

version := "1.0"

scalaVersion := "2.11.12"

//libraryDependencies += "org.apache.spark" %% "spark-core" % "2.4.4"

  libraryDependencies ++= {
   val sparkVersion = "2.4.4"
       Seq( "org.apache.spark" %% "spark-core" % sparkVersion)
  }

我的Scala项目

import org.apache.spark.sql.SparkSession
object demoapp {
  def main(args: Array[String]) {

val logfile = "C:/TEST/demo/hello.txt"
val spark = SparkSession.builder.appName("Simple App in Scala").getOrCreate()
val logData = spark.read.textFile(logfile).cache()
val numAs = logData.filter(line => line.contains("Washington")).count()
println(s"Lines are: $numAs")
spark.stop()
}
}