When I launch a program, I get this error:
Code:
(process:19541): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
Here is the /etc/default/locale
LANG=en_US.UTF-8
and /var/lib/locales/supported.d/local
en_US.UTF-8 UTF-8
1 - Why I still get the error?
2 - If I want to change to en_GB, what should I put?