maven更新本地私服报错

maven本地仓库的更新 连网后window+R 输入cmd回车 输入maven 版本查看 mvn -v 更新本地仓库命令 mvn help:system 回车如图是成功: 失败报错如下: Failed to execute goal org.apache.maven.plugins:maven-help-plugin:3.1.0:system (default-cli) on project standalone-pom: Execution default-cli of goal org.apache.maven.plugins:maven-help-plugin: