Like "Hans Ostrowski" : grub-install search modinfo.sh in "/usr/lib/grub/i386-pc/" directory BUT modinfo.sh is in "/usr/lib/grub/x86_64-efi/" directory
Like "Hans Ostrowski" : grub/i386- pc/" directory grub/x86_ 64-efi/ " directory
grub-install search modinfo.sh in "/usr/lib/
BUT
modinfo.sh is in "/usr/lib/