What should I do download via epic games

[yultranions]

https://i.imgur.com/oxwMqUo.png

[Kopra]

Just running GTA through Epic Games launcher should automatically update it. Uninstall all other instances of GTA if you have them. It seems by active path specified in error output that you have game installed in C:\GTAV, usually Epic Games installs games in parent folder named Epic Games, unless you changed it manually.