This bug was fixed in the package grub2-signed - 1.34.16
--------------- grub2-signed (1.34.16) trusty; urgency=medium
* Rebuild against grub-efi-amd64 2.02~beta2-9ubuntu1.14 (LP: #1637290)
-- Mathieu Trudel-Lapierre <email address hidden> Fri, 14 Jul 2017 15:33:38 -0400
This bug was fixed in the package grub2-signed - 1.34.16
---------------
grub2-signed (1.34.16) trusty; urgency=medium
* Rebuild against grub-efi-amd64 2.02~beta2- 9ubuntu1. 14 (LP: #1637290)
-- Mathieu Trudel-Lapierre <email address hidden> Fri, 14 Jul 2017 15:33:38 -0400