That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml
** Changed in: grub2-signed (Ubuntu)
Status: Confirmed => Invalid
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2-signed (Ubuntu)
Status: New => Confirmed
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1700985
** Tags removed: need-duplicate-check
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You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1700985
Title:
package grub-efi-amd64-signed 1.80.1+2.02~beta3-4ubuntu2.1 failed to
install/upgrade: package is
