Hello @KentMent Please try the following steps it might help you
First verfiy game files by going to Steam → Library → Euro Truck Simulator2 then right click → Properties → Local Files → Verfiy integrity of game files. after the proccess is done
Right click on Euro Truck Simulator2 Again → Manage → Browse Local Files and copy the file direction and paste it in launcher. and restart the launcher
I hope this way work with you.