maven中的各种问题

[ERROR] Plugin org.apache.maven.plugins:maven-shade-plugin:3.1 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-shade-plugin:jar:3.1 in http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]

[ERROR] Plugin org.apache.maven.plugins:maven-shade-plugin:3.1 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-shade-plugin:jar:3.1 in http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]

Failure to find org.apache.maven.plugins:maven-shade-plugin:jar:3.1 in http://repo.maven.apache.org/maven2 was cached in the local
repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced

反正是这些错误信息。

然后问题是：

配置pom的build的时候：

<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4</version>

当时这个version写成了3.1， 鬼知道我是在我的笔记中怎么会写出3.1叫？ 我去mvnrepository看了一下最新版本就只是2.4呢