无法使用sonatype代理存储库解析kotlin工件

Question

我正在为我的网络建立一个sonatype代理存储库，但无法解决我在mavencentral存储库kotlin-gradle-plugin中知道的工件。这是确切的错误：

Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.60.
Searched in the following locations:
    http://localhost:8081/nexus/content/groups/public/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1.60/kotlin-gradle-plugin-1.1.60.pom
        http://localhost:8081/nexus/content/groups/public/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1.60/kotlin-gradle-plugin-1.1.60.jar
        https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1.60/kotlin-gradle-plugin-1.1.60.pom
        https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.1.60/kotlin-gradle-plugin-1.1.60.jar
    Required by:
        project :

以下是当前正在代理的网址的列表：

https://maven.google.com
https://jcenter.bintray.com
http://localhost:8081/repository/maven-central/

有什么想法吗？