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

1. 报错如下：

[ERROR] Error executing Maven.
[ERROR] 1 problem was encountered while building the effective settings
[FATAL] Non-parseable settings D:ChengXumavenapache-maven-3.5.2confsettings.xml: end tag name </settings> must match start tag name <mirrors> from line 50 (position: TEXT seen ...</activeProfiles>
	
</settings>... @107:12)  @ D:ChengXumavenapache-maven-3.5.2confsettings.xml, line 107, column 12

2. 执行 mvn install -Dmaven.test.skip=true 也一直不成功。

3. 原因： maven 的配置文件 setting.xml 有错。

在配置文件中多了一行：<mirrors> 导致配置文件的格式不正确。

4. 去掉多的这一行，保证 setting　文件配置正确，就好了。

<原文地址：https://cloud.tencent.com/developer/article/1486469/div>