Raspberry Pi - Raspbian ,LANGUAGE = (unset), LC_ALL = (unset)

$ sudo apt-get update

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    LC_ALL = (unset),
    LC_TIME = "en_IE.UTF-8",
    LC_MONETARY = "en_IE.UTF-8",
    LC_ADDRESS = "en_IE.UTF-8",
    LC_TELEPHONE = "en_IE.UTF-8",
    LC_NAME = "en_IE.UTF-8",
    LC_MEASUREMENT = "en_IE.UTF-8",
    LC_IDENTIFICATION = "en_IE.UTF-8",
    LC_NUMERIC = "en_IE.UTF-8",
    LC_PAPER = "en_IE.UTF-8",
    LANG = "hr_HR.UTF-8"

$ sudo apt-get install locales-all

$ sudo raspi-config

$ sudo apt-get update