Linux Ubuntu, issue installing application (cantact-app)

I am trying to install cantact-app on Ubuntu. This is the error message I am getting when i ran "ant build" or "sudo ant build" (ant and netbeans both are installed): honza@honza-Lenovo-IdeaPad-Y510P:~/cantact-app$ ant build Buildfile: /home/honza/cantact-app/[login to view URL] download: BUILD FAILED /home/honza/cantact-app/[login to view URL]: The following error occurred while executing this line: /home/honza/cantact-app/nbproject/[login to view URL]: Cannot find NetBeans build harness. Check that [login to view URL] and [login to view URL] are defined. On a developer machine these are normally defined in ${[login to view URL]}=${[login to view URL]}/[login to view URL] but for automated builds you should pass these properties to Ant explicitly. You may instead download the harness and platform: -Dbootstrap.url=.../[login to view URL] -Dautoupdate.catalog.url=.../[login to view URL] I need you to help me to install this app properly over Skype screen share, so i can learn. This is the url to the app - [login to view URL] Thank you Jan