编译问题，Maven build error

[NightZZD]

run “mvn clean package -Dmaven.test.skip=true” command

then it failed：

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] angel [pom]
[INFO] angel-ps [pom]
[INFO] angel-ps-core [jar]
[INFO] angel-ps-psf [jar]
[INFO] angel-ps-graph [jar]
[INFO] angel-ps-tools [jar]
[INFO] angel-ps-mllib [jar]
[INFO] angel-ps-examples [jar]
[INFO] spark-on-angel

[pom]
[INFO] spark-on-angel-core [jar]
[INFO] spark-on-angel-mllib [jar]
[INFO] spark-on-angel-graph [jar]
[INFO] spark-on-angel-examples [jar]
[INFO] angel-dist [jar]
[INFO]
[INFO] ----------------------< com.tencent.angel:angel >-----------------------
[INFO] Building angel 3.2.0 [1/14]
[INFO] --------------------------------[ pom ]---------------------------------
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for angel 3.2.0:
[INFO]
[INFO] angel .............................................. FAILURE [ 3.053 s]
[INFO] angel-ps ........................................... SKIPPED
[INFO] angel-ps-core ...................................... SKIPPED
[INFO] angel-ps-psf ....................................... SKIPPED
[INFO] angel-ps-graph ..................................... SKIPPED
[INFO] angel-ps-tools ..................................... SKIPPED
[INFO] angel-ps-mllib ..................................... SKIPPED
[INFO] angel-ps-examples .................................. SKIPPED
[INFO] spark-on-angel ..................................... SKIPPED
[INFO] spark-on-angel-core ................................ SKIPPED
[INFO] spark-on-angel-mllib ............................... SKIPPED
[INFO] spark-on-angel-graph ............................... SKIPPED
[INFO] spark-on-angel-examples ............................ SKIPPED
[INFO] angel-dist ......................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.557 s
[INFO] Finished at: 2023-02-25T22:35:23+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved:
Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5:
Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central
(https://repo.maven.apache.org/maven2): transfer failed for
https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom:
Unknown host repo.maven.apache.org: Temporary failure in name resolution -> [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] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException

Process finished with exit code 1

[wangcaihua]

这是来自QQ邮箱的假期自动回复邮件。   您好，我最近正在休假中，无法亲自回复您的邮件。我将在假期结束后，尽快给您回复。

[Berrylucas]

这是来自QQ邮箱的假期自动回复邮件。   您好，我最近正在休假中，无法亲自回复您的邮件。我将在假期结束后，尽快给您回复。

请问您现在有时间了吗，angel的文档是不是都过时了呀，新版本的文档都在哪呢