我有如下build.sbt文件 `
import _root_.sbt.Keys._
import _root_.sbt.Keys._
import _root_.sbtassembly.Plugin.AssemblyKeys._
import sbtassembly.Plugin.AssemblyKeys
import AssemblyKeys._
` 在构建项目时,我遇到了错误
error: object sbtassembly is not a member of package <root>
import _root_.sbtassembly.Plugin.AssemblyKeys._
有人可以帮忙吗