This bug was fixed in the package grub2-signed - 1.93.8
--------------- grub2-signed (1.93.8) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.7 (LP: #1785033)
-- Mathieu Trudel-Lapierre <email address hidden> Thu, 11 Oct 2018 08:46:20 -0400
This bug was fixed in the package grub2-signed - 1.93.8
---------------
grub2-signed (1.93.8) bionic; urgency=medium
* Rebuild against grub2 2.02-2ubuntu8.7 (LP: #1785033)
-- Mathieu Trudel-Lapierre <email address hidden> Thu, 11 Oct 2018 08:46:20 -0400