Comment 0 for bug 1768271

When running:

$ sudo update-desktop-database

I get this:

Error in file "/usr/share/applications/org.gnome.font-viewer.desktop": "font/ttf" is an invalid MIME type ("font" is an unregistered media type)
Error in file "/usr/share/applications/org.gnome.font-viewer.desktop": "font/otf" is an invalid MIME type ("font" is an unregistered media type)

I think this is the same bug as this one: https://bugzilla.redhat.com/show_bug.cgi?id=1564650

Other info:
1.
$ lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
2.
$ apt-cache policy desktop-file-utils
desktop-file-utils:
  Installed: 0.23-1ubuntu3
  Candidate: 0.23-1ubuntu3
  Version table:
 *** 0.23-1ubuntu3 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        100 /var/lib/dpkg/status

3. Expected `sudo update-desktop-database` to not return an error
4. Error regarding invalid MIME type (see above) was returned.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: desktop-file-utils 0.23-1ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue May 1 11:11:05 2018
InstallationDate: Installed on 2018-04-29 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: desktop-file-utils
UpgradeStatus: No upgrade log present (probably fresh install)