app.image therown gtk warning

sonny@d814766-PTS:~/vmware/SFOLDER/Downloads_HOST$ ubuntu-bug apport-gtk

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.880: Theme parsing error: gtk.css:559:1: Expected a valid selector

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.881: Theme parsing error: gtk.css:1148:2: Expected semicolon

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.881: Theme parsing error: gtk.css:1489:27: Expected a valid selector

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.882: Theme parsing error: gtk.css:1618:15: 'bborder-color' is not a valid property name

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.882: Theme parsing error: gtk.css:1622:20: Expected a valid selector

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.882: Theme parsing error: gtk.css:1988:15: 'bborder-color' is not a valid property name

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.885: Theme parsing error: gtk.css:4363:2: Expected semicolon

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.886: Theme parsing error: gtk.css:4994:2: Junk at end of value for border-radius

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.888: Theme parsing error: gtk.css:6305:26: Expected a valid selector

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.889: Theme parsing error: gtk.css:7321:26: Expected a valid selector

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.890: Theme parsing error: gtk.css:8201:64: Junk at end of value for background-image

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.891: Theme parsing error: gtk.css:8820:55: Using one color stop with linear-gradient() is deprecated.

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.891: Theme parsing error: gtk.css:8820:55: Missing closing bracket at end of linear gradient

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.891: Theme parsing error: gtk.css:8933:19: not a number

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.891: Theme parsing error: gtk.css:8951:15: 'bcbcbc' is not a valid color name

(apport-gtk:5965): Gtk-WARNING **: 18:00:06.893: Theme parsing error: gtk.css:10394:20: Not a valid image

(firefox:7791): Gtk-WARNING **: 18:00:42.449: Theme parsing error: gtk.css:559:1: Expected a valid selector

(firefox:7791): Gtk-WARNING **: 18:00:42.453: Theme parsing error: gtk.css:1148:2: Expected semicolon

(firefox:7791): Gtk-WARNING **: 18:00:42.455: Theme parsing error: gtk.css:1489:27: Expected a valid selector

(firefox:7791): Gtk-WARNING **: 18:00:42.455: Theme parsing error: gtk.css:1618:15: 'bborder-color' is not a valid property name

(firefox:7791): Gtk-WARNING **: 18:00:42.456: Theme parsing error: gtk.css:1622:20: Expected a valid selector

(firefox:7791): Gtk-WARNING **: 18:00:42.457: Theme parsing error: gtk.css:1988:15: 'bborder-color' is not a valid property name
sonny@d814766-PTS:~/vmware/SFOLDER/Downloads_HOST$
(firefox:7791): Gtk-WARNING **: 18:00:42.467: Theme parsing error: gtk.css:4363:2: Expected semicolon

(firefox:7791): Gtk-WARNING **: 18:00:42.470: Theme parsing error: gtk.css:4994:2: Junk at end of value for border-radius

(firefox:7791): Gtk-WARNING **: 18:00:42.473: Theme parsing error: gtk.css:6305:26: Expected a valid selector

(firefox:7791): Gtk-WARNING **: 18:00:42.475: Theme parsing error: gtk.css:7321:26: Expected a valid selector

(firefox:7791): Gtk-WARNING **: 18:00:42.478: Theme parsing error: gtk.css:8201:64: Junk at end of value for background-image

(firefox:7791): Gtk-WARNING **: 18:00:42.479: Theme parsing error: gtk.css:8820:55: Using one color stop with linear-gradient() is deprecated.

(firefox:7791): Gtk-WARNING **: 18:00:42.479: Theme parsing error: gtk.css:8820:55: Missing closing bracket at end of linear gradient

(firefox:7791): Gtk-WARNING **: 18:00:42.479: Theme parsing error: gtk.css:8933:19: not a number

(firefox:7791): Gtk-WARNING **: 18:00:42.479: Theme parsing error: gtk.css:8951:15: 'bcbcbc' is not a valid color name

(firefox:7791): Gtk-WARNING **: 18:00:42.482: Theme parsing error: gtk.css:10394:20: Not a valid image

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: apport-gtk 2.20.9-0ubuntu7.15
ProcVersionSignature: Ubuntu 5.3.0-22.24+system76~1573660262~18.04~d11b582-generic 5.3.7
Uname: Linux 5.3.0-22-generic x86_64
ApportLog:

ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 19 18:00:06 2020
InstallationDate: Installed on 2018-09-13 (674 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: No upgrade log present (probably fresh install)