As per RockStar website they couldn’t solved this issue when it’s very easy to solve.
the message which showing to you once you want to install GTA V game
Problems uninstalling Social Club because it says to uninstall all Rockstar Games.
use the same game setup Luncher and select un-install the game and if you don’t have this file you can download it from here.
If you have any other problem leave your comment here to help you.
Also published on Medium.