On Tue, 19 Nov 2019 at 11:32, Dan Hitt <dan.hitt@gmail.com> wrote: > > When okular opens a pdf, from the command line, it issues a warning > Icon theme "crystalsvg" not found. Hi, try this: https://packages.debian.org/search?searchon=contents&keywords=crystalsvg&mode=filename&suite=stable&arch=any