Troubleshooting. Setting locale failed

Ошибка

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    LC_ALL = (unset),
    LC_CTYPE = "UTF-8",
    LANG = "en_US.UTF-8"
    are supported and installed on your system.

Решение

Редактируем текущие настройки локали

nano /etc/default/locale

LANGUAGE=en_US.UTF-8
LC_ALL=en_US.UTF-8
LANG=en_US.UTF-8
LC_TYPE=en_US.UTF-8

Применяем новые настройки

locale-gen en_US.UTF-8
dpkg-reconfigure locales

Релогин