$ libreoffice.writer
datahome: /home/myusername/snap/libreoffice/17/.local-5.3.0.3/share
(soffice:4552): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
Gtk-Message: Failed to load module "unity-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
(soffice:4552): Gtk-WARNING **: Could not find the icon 'pan-down-symbolic-ltr'. The 'hicolor' theme
was not found either, perhaps you need to install it.
You can get a copy from:
http://icon-theme.freedesktop.org/releases
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Icon 'image-missing' not present in theme ubuntu-mono-dark
(soffice:4552): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed