Cannot replicate 
A couple of people received this error while trying to install drivers, but it seems like they both ended up using a workaround rather than finding a solution: Can't install NVIDIA drivers (Timeshift error), Freeze during installation using propietary drivers - #6 by Skyxel
The error itself is caused by a Timeshift module, not within Garuda Settings.
So first of all I wold try creating a snapshot manually and see if it gives the same error.
Sorry it's not much help, but maybe a small step in the right direction.