It is marked as optional because it is allowed to fail as it does when you are running with Gnome (unity uses Gnome by default). So this is not a bug. You make comment out the lines as shown in #19 but you may regret it if you switch to KUbuntu one day...
There is information about KWallet.
https:/ /wiki.archlinux .org/index. php/KDE_ Wallet
It is marked as optional because it is allowed to fail as it does when you are running with Gnome (unity uses Gnome by default). So this is not a bug. You make comment out the lines as shown in #19 but you may regret it if you switch to KUbuntu one day...