foreman-nightly-deb-pipeline 426 failed

[jenkins]

Foreman DEB nightly pipeline failed:

https://ci.theforeman.org/job/foreman-nightly-deb-pipeline/426/

foreman-pipeline-foreman-nightly-ubuntu1804-install (failed)
foreman-pipeline-foreman-nightly-ubuntu1804-upgrade (failed)
foreman-pipeline-foreman-nightly-debian10-install (passed)
foreman-pipeline-foreman-nightly-debian10-upgrade (passed)

[tbrisker]

looks like package update on ubuntu is failing for grub:

Setting up grub-pc (2.02-2ubuntu8.16) ...
dpkg: error processing package grub-pc (--configure):
 installed grub-pc package post-installation script subprocess returned error exit status 1