I have Ubuntu 18.04 installed. Every time I used evince to view a pdf file, I get the following error on my terminal:

Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory

The error has no obvious negative consequences, it is just annoying to see error message on the terminal all the time.

Is there a package providing the missing theme? Or how can I get rid of this error?

P.S. I found that there is an installable package named gnome-builder, but installing it with sudo apt-get install gnome-builder does not provide the missing .css file.

  • You could also delete the offending line on gnome-builder.css to get rid of this error.
    – Liso
    Sep 14, 2018 at 7:36

1 Answer 1


This is bugs occurring in new 18.04 release, please refer to this link to follow-up the issue: https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1773045.

There are already (temporary) fix to make the message/warning disappear, please run following command on terminal:

cd /usr/share/themes/Radiance/gtk-3.20/apps
sudo ln -s gedit.css gnome-builder.css

Source: https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1773045/comments/3

  • Good to see that this one is fixed now. Oct 31, 2018 at 9:52

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