artifact has not been packaged yet. when used on reactor artifact, unpack should be executed after packaging: see mdep-威尼斯人最新

failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.8:unpack (extract-web-ui) on project web-ui: artifact has not been packaged yet. when used on reactor artifact, unpack should be executed after packaging: see mdep-98. 请问一下 这个问题怎么解决呀？