This bug was fixed in the package grub2-signed - 1.93.13
--------------- grub2-signed (1.93.13) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.12.
grub2-signed (1.93.12) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.11. (LP: #1401532) (LP: #1814403) (LP: #1814575)
-- Mathieu Trudel-Lapierre <email address hidden> Thu, 07 Feb 2019 19:28:09 -0500
This bug was fixed in the package grub2-signed - 1.93.13
---------------
grub2-signed (1.93.13) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.12.
grub2-signed (1.93.12) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.11.
(LP: #1401532) (LP: #1814403) (LP: #1814575)
-- Mathieu Trudel-Lapierre <email address hidden> Thu, 07 Feb 2019 19:28:09 -0500