This bug was fixed in the package linux - 4.15.0-20.21
--------------- linux (4.15.0-20.21) bionic; urgency=medium
* linux: 4.15.0-20.21 -proposed tracker (LP: #1766452)
* package shim-signed (not installed) failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 5 (LP: #1766391) - [Packaging] fix invocation of header postinst hooks
-- Seth Forshee <email address hidden> Mon, 23 Apr 2018 23:56:17 -0500
This bug was fixed in the package linux - 4.15.0-20.21
---------------
linux (4.15.0-20.21) bionic; urgency=medium
* linux: 4.15.0-20.21 -proposed tracker (LP: #1766452)
* package shim-signed (not installed) failed to install/upgrade: installed
shim-signed package post-installation script subprocess returned error exit
status 5 (LP: #1766391)
- [Packaging] fix invocation of header postinst hooks
-- Seth Forshee <email address hidden> Mon, 23 Apr 2018 23:56:17 -0500