(lightdm-gtk-greeter:1931): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

** (lightdm-gtk-greeter:1931): WARNING **: Failed to load background: Failed to open file '/home/float/Firefox_wallpaper.png': Permission denied

** (lightdm-gtk-greeter:1931): WARNING **: Failed to read wallpaper: /home/float/Firefox_wallpaper.png

** (lightdm-gtk-greeter:1931): WARNING **: Failed to load background: Failed to open file '/home/float/Firefox_wallpaper.png': Permission denied

** (lightdm-gtk-greeter:1931): WARNING **: Failed to read wallpaper: /home/float/Firefox_wallpaper.png

** (lightdm-gtk-greeter:1931): WARNING **: Failed to load user image: Failed to open file '/home/float/.face': Permission denied