Maven打包警告Unrecognised tag: 'blocked'?

Question

Maven打包警告Unrecognised tag: 'blocked',为什么会出现这个警告？
spring boot 2.3.2.RELEASE
maven 3.8.5

maven settings.xml 文件blocked标签是默认配置自带的啊

<mirror>
    <id>maven-default-http-blocker</id>
    <mirrorOf>external:http:*</mirrorOf>
    <name>Pseudo repository to mirror external repositories initially using HTTP.    </name>
    <url>http://0.0.0.0/</url>
    <blocked>true</blocked>
</mirror>