android studio Error: Error:A problem occurred configuring project ':main'.

elegant

Hello guys
I downloaded the latest version of android Openvpn that is on github https://github.com/schwabe/ics-openvpn
the android studio of mine had 2.3.2 version and i upgraded it to 3.0.1
RIght now when i want to sync this project i have this error : Error:A problem occurred configuring project ':main'.
Link of Screenshot: https://ibb.co/ib2SBS
I would be appreciated if someone guide me what should i do?

plaisthos

The screenshot already tells you to check the IDE log for more information. I suggest you look there. Also this the wrong forum for the app (OpenVPN Connect and Openvpn for Android are different apps)