make does not build target iso

# Installed anduinOS on a VM, looks good.
#got the source code with git
git clone https://github.com/Anduin2017/AnduinOS.git
cd AnduinOS/src
make

During make, there are a bunch of errors which scroll over the terminal. I guess the make session does not produce a log file that I can look at.

At the very end of the make session, I get:

[  OK  ]  Creating EFI boot image on /isolinux/efiboot.img... 
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.00567311 s, 1.8 GB/s
mkfs.fat 4.2 (2021-01-31)
Installing for i386-pc platform.
grub-install: error: install device isn't specified.
[  OK  ]  Umount before exit... 
umount: new_building_os/sys: no mount point specified.
umount: new_building_os/sys: no mount point specified.
umount: new_building_os/proc: no mount point specified.
umount: new_building_os/proc: no mount point specified.
umount: new_building_os/dev: no mount point specified.
umount: new_building_os/dev: no mount point specified.
umount: new_building_os/run: no mount point specified.
umount: new_building_os/run: no mount point specified.
[  OK  ]  Umount before exit succeeded 
make: *** [makefile:55: current] Error 1

Reproduce the failure from src with make and inspect makefile:55, where the current target exits after grub-install reports that the install device is not specified. Review the complete build output and the ISO-building steps around that target. Done means the ISO target completes without the reported grub-install error.