(update) sbt.librarymanagement.ResolveException: Error downloading io.spray:sbt-revolver;sbtVersion=1.0;scalaVersion=2.12:0.9.1
[error] Not found
[error] Not found
[error] not found: https://repo1.maven.org/maven2/io/spray/sbt-revolver_2.12_1.0/0.9.1/sbt-revolver-0.9.1.pom
not found: https://repo1.maven.org/maven2/io/spray/sbt-revolver_2.12_1.0/0.9.1/sbt-revolver-0.9.1.pom
为什么这个工件被移除了?这个工件在另一个存储库中可用吗?