cscs
27
…is your problem related to failing to install grub?
Maybe … I might think its more mkinitcpio
.
The script is really just an attempt at automating the system-dependent string of, ex:
sudo grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=Manjaro --recheck
Looks like there is more of a guide here: