This bug was fixed in the package grub2 - 2.02+dfsg1-5ubuntu6
--------------- grub2 (2.02+dfsg1-5ubuntu6) cosmic; urgency=medium
[ Steve Langasek ] * debian/grub-check-signatures: Handle the case where we have unsigned vmlinuz and signed vmlinuz.efi.signed. (LP: #1788727)
-- Mathieu Trudel-Lapierre <email address hidden> Wed, 03 Oct 2018 14:59:05 -0400
This bug was fixed in the package grub2 - 2.02+dfsg1-5ubuntu6
--------------- 5ubuntu6) cosmic; urgency=medium
grub2 (2.02+dfsg1-
[ Steve Langasek ] grub-check- signatures: Handle the case where we have unsigned
* debian/
vmlinuz and signed vmlinuz.efi.signed. (LP: #1788727)
-- Mathieu Trudel-Lapierre <email address hidden> Wed, 03 Oct 2018 14:59:05 -0400