How to: Fix Raspberry Pi - Setting locale failed (SOLVED)

 How to: Fix Raspberry Pi - Settings Locale Failed

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_GB.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Do you keep seeing these warnings? Do they bug you like they were bugging me? They’re really pretty easy to fix. It’s just the local settings. They make output on your screen look better. They control the way that searches work and programs compile. The problem is that the default Raspbian install doesn’t give enough information to locale, so it complains on occasion. To fix locale, edit the configuration in the file:

sudo nano /etc/default/locale

The original file looks like this:

File generated by update-locale
LANG=en_US.UTF-8

Insert a couple of lines at the end, (replace the country code according to your preference so it looks like below:

File generated by update-locale
LANG=en_US.UTF-8
LC_CTYPE=en_US.UTF-8
LC_MESSAGES=en_US.UTF-8
LC_ALL=en_US.UTF-8

Save and reboot. Problem solved!