the problem occurs after running mvn help:system. The error message is as follows:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.008 s
[INFO] Finished at: 2018-08-10T14:22:12+08:00
[INFO] Final Memory: 6M/123M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix "help" in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (D:\maven\repository), central (https://repo.maven.apache.org/maven2)] -> [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/NoPluginFoundForPrefixException according to some information on the Internet, I configured the mirrors tag in settings.xml. I tried many of them, but it didn"t work.
I have this problem on both my computers. Maven 3.5,3.3,3.2 all have this problem. The environment is JDK1.7 for help!