Thank you for the bug report, the error is
grub-install: error: cannot copy `/usr/lib/shim/mmx64.efi' to `/boot/efi/EFI/Boot/mmx64.efi': No space left on device.
which suggests the partition used for the EFI loader hasn't enough free space, did you manually partition or was that autocreated?
Thank you for the bug report, the error is
grub-install: error: cannot copy `/usr/lib/ shim/mmx64. efi' to `/boot/ efi/EFI/ Boot/mmx64. efi': No space left on device.
which suggests the partition used for the EFI loader hasn't enough free space, did you manually partition or was that autocreated?