Erro Locale - dpkg-reconfigure locales

O erro

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = (unset),
LC_NUMERIC = "pt_BR.UTF-8",
LC_COLLATE = (unset),
LC_TIME = "pt_BR.UTF-8",
LC_MESSAGES = (unset),
LC_MONETARY = "pt_BR.UTF-8",
LC_ADDRESS = "pt_BR.UTF-8",
LC_IDENTIFICATION = (unset),
LC_MEASUREMENT = "pt_BR.UTF-8",
LC_PAPER = "pt_BR.UTF-8",
LC_TELEPHONE = "pt_BR.UTF-8",
LC_NAME = "pt_BR.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
locale: Cannot set LC_ALL to default locale: No such file or directory

Solução

dpkg-reconfigure locales