Para resolver o problema:
perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "pt_BR.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory
Siga os passos abaixo:
No terminal digite:
sudo apt-get install --reinstall language-pack-en sudo apt-get install --reinstall language-pack-pt sudo locale-gen sudo dpkg-reconfigure locales
Pra mim resolveu! :)

