sh 'echo ${WORKSPACE}'

    env.PATH="${WORKSPACE}/xyz-app:${env.PATH}"

    sh '${WORKSPACE}/xyz-app/mvnw clean install'

+ /app/jenkins/workspace/CU_project/for_xyz/xyz-app/mvnw clean install
/app/jenkins/workspace/CU_project/for_xyz/xyz-app/mvnw: 236: /app/jenkins/workspace/CU_project/for_xyz/xyz-app/mvnw: cannot open /app/jenkins/workspace/CU_project/for_xyz/.mvn/wrapper/maven-wrapper.properties: No such file
/app/jenkins/workspace/CU_project/for_xyz/.mvn/wrapper/maven-wrapper.jar: No such file or directory
Error: Could not find or load main class org.apache.maven.wrapper.MavenWrapperMain