我收到此错误 "object ml is not a member of package org.apache.spark"

I'm getting this error "object ml is not a member of package org.apache.spark"

我正在使用 spark 2.4.4 我的 sbt 文件看起来像

name := "convertor"

version := "0.1"

scalaVersion := "2.11.12"


libraryDependencies += "org.apache.spark" %% "spark-core" % "2.4.4"
libraryDependencies += "org.apache.spark" %% "spark-sql" % "2.4.4"
libraryDependencies += "org.apache.spark" %% "spark-mllib" % "2.4.4" % "runtime"

但是，我还是

Error:(6, 25) object ml is not a member of package org.apache.spark
import org.apache.spark.ml.feature.OneHotEncoderEstimator

我在我的 sbt 文件中尝试了这个库，我的问题得到了解决。

libraryDependencies += "org.apache.spark" %% "spark-mllib" % "2.3.0"