无法在jenkins中安装Git插件

我在jenkins中安装Git插件时遇到以下问题,不确定需要做什么.

java.io.IOException: Failed to dynamically deploy this plugin
    at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1317)
    at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1116)
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:104)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Failed to install git plugin
    at hudson.PluginManager.dynamicLoad(PluginManager.java:450)
    at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1313)
    ... 5 more
Caused by: java.io.IOException: Dependency scm-api (0.2) doesn't exist
    at hudson.PluginWrapper.resolvePluginDependencies(PluginWrapper.java:488)
    at hudson.PluginManager.dynamicLoad(PluginManager.java:440)

xeraa.. 10

安装上列出的所有依赖https://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin,包括SCM-API.我会假设Jenkins在开始安装之前检查依赖项,但它可能在某处行为不端.