This bug was fixed in the package grub2-signed - 1.80
--------------- grub2-signed (1.80) zesty; urgency=medium
* Rebuild against grub2 2.02~beta3-4ubuntu2. (LP: #1401532)
-- Mathieu Trudel-Lapierre <email address hidden> Tue, 04 Apr 2017 10:28:34 -0400
This bug was fixed in the package grub2-signed - 1.80
---------------
grub2-signed (1.80) zesty; urgency=medium
* Rebuild against grub2 2.02~beta3- 4ubuntu2. (LP: #1401532)
-- Mathieu Trudel-Lapierre <email address hidden> Tue, 04 Apr 2017 10:28:34 -0400