eclipse 安装m2插件时报错

Cannot complete the install because one or more required items could not be found.
  Software being installed: m2e - slf4j over logback logging (Optional) 1.9.0.20180606-2036 (org.eclipse.m2e.logback.feature.feature.group 1.9.0.20180606-2036)
  Missing requirement: m2e logback configuration 1.9.0.20180606-2036 (org.eclipse.m2e.logback.configuration 1.9.0.20180606-2036) requires 'slf4j-api' but it could not be found

　　

1. Eclipse - >帮助 - >安装新软件
2. 添加新的软件站点：
   • 姓名：slf4j
   • 网址：http：//www.fuin.org/p2-repository/
3. 展开“Maven osgi-bundles”并选择“slf4j-api”
4. 单击“下一步”并按照安装进行操作。

安装完成后（Eclipse重新启动）然后我就可以安装maven插件了。