未能执行goal org.apache.mavenins:maven-jar-plugin:2.6:jar

I am working on an end-to-end project which includes backend and frontend. The frontend works fine (angular2 framework, the 'npm start' and 'ng build' works). However, when I run 'mvn clean install' from the project home folder, it gives me an error where I have no clue:I am working on an end-to-end project which inc