I've also rebuilt the package without the two lines that they added and it corrected the issue for me and a coworker.
** Attachment added: "plymouth_0.9.4git20200109-0ubuntu6_amd64.deb" https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1866377/+attachment/5334374/+files/plymouth_0.9.4git20200109-0ubuntu6_amd64.deb -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1866377 Title: update-initramfs fails on plymouth hook due to missing target dir To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1866377/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs