This bug was fixed in the package desktop-file-utils - 0.23-3ubuntu3
--------------- desktop-file-utils (0.23-3ubuntu3) cosmic; urgency=medium
* debian/patches/add-font-as-valid-media-type.patch: - backport debian change to fix update-desktop-error with gnome-font-viewer 3.28 (LP: #1768271)
-- Sebastien Bacher <email address hidden> Tue, 06 Nov 2018 16:25:03 +0100
This bug was fixed in the package desktop-file-utils - 0.23-3ubuntu3
---------------
desktop-file-utils (0.23-3ubuntu3) cosmic; urgency=medium
* debian/ patches/ add-font- as-valid- media-type. patch: desktop- error with font-viewer 3.28 (LP: #1768271)
- backport debian change to fix update-
gnome-
-- Sebastien Bacher <email address hidden> Tue, 06 Nov 2018 16:25:03 +0100