Errors in library

[jumpyjava]

Hello! No matter how much I try, I can't use this library in any way. When I try to compile a project, errors constantly appear, and in the library itself. It also cannot be imported as a module into Android Studio, since it acts as an application. Maybe I'm doing something wrong? I even tried to import the library into the project and immediately compile it without any action, the result was the same. HELP, I REALLY NEED IT

[schwabe]

This is not a library. It is an application. That it acts like an application, is because it is an application.

[jumpyjava]

How can I then use this in my application? I need to connect to a VPN server via OpenVpn, everyone advised you