This bug was fixed in the package grub2-signed - 1.34.17
--------------- grub2-signed (1.34.17) trusty; urgency=medium
* Rebuild against grub-efi-amd64 2.02~beta2-9ubuntu1.14 (LP: #1708245)
-- Mathieu Trudel-Lapierre <email address hidden> Wed, 04 Jul 2018 15:41:41 -0400
This bug was fixed in the package grub2-signed - 1.34.17
---------------
grub2-signed (1.34.17) trusty; urgency=medium
* Rebuild against grub-efi-amd64 2.02~beta2- 9ubuntu1. 14 (LP: #1708245)
-- Mathieu Trudel-Lapierre <email address hidden> Wed, 04 Jul 2018 15:41:41 -0400