解决：[ERROR] Error executing Maven.[ERROR] 1 problem was encountered while building the effective set

1、昨天安装maven时，修改了配置文件发现如下错误

        先观察错误类型，

[ERROR] Error executing Maven.
[ERROR] 1 problem was encountered while building the effective settings
[FATAL] Non-parseable settings E:apache-mavenapache-maven-3.8.3confsettings.xml: Duplicated tag: 'mirrors' (position: START_TAG seen ...rn  ... @167:12)  @ E:apache-mavenapache-maven-3.8.3confsettings.xml, line 167, column 12

2、原因：maven  的配置文件  setting.xml错误。

        多余mirrors

 3、再次验证：已解决！