(software-properties-gtk:4604): Gtk-WARNING **: Error loading image 'file:///usr/share/themes/Greybird/gtk-3.0/assets/checkbox-checked.png': Unrecognized image file format

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkCheckButton': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkAlignment': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkFrame': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkNotebook': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkWindow': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: Error loading image 'file:///usr/share/themes/Greybird/gtk-3.0/assets/checkbox-checked-hover.png': Unrecognized image file format

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkCheckButton': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkAlignment': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkFrame': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkNotebook': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkWindow': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkCheckButton': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkAlignment': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkFrame': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkNotebook': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkVBox': invalid matrix (not invertible)

(software-properties-gtk:4604): Gtk-WARNING **: drawing failure for widget `GtkWindow': invalid matrix (not invertible)