Local language setting

[Olli781]

Hello,
when I change the language I get the following message in the terminal:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "de",
LC_ALL = (unset),
LC_CTYPE = "en_US.UTF-8",
LC_NUMERIC = "de_DE.UTF-8",
LC_COLLATE = (unset),
LC_TIME = "de_DE.UTF-8",
LC_MESSAGES = (unset),
LC_MONETARY = "de_DE.UTF-8",
LC_ADDRESS = "de_DE.UTF-8",
LC_IDENTIFICATION = (unset),
LC_MEASUREMENT = "de_DE.UTF-8",
LC_PAPER = "de_DE.UTF-8",
LC_TELEPHONE = "de_DE.UTF-8",
LC_NAME = "de_DE.UTF-8",
LANG = "de_DE.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

When starting PHD Guiding the following message appears:

Cannot set locale to language "German (Germany)"

The troubleshooting is probably easy. But I can't figure it out right now. Can someone help me?
Thank you, Oliver

[MattBlack85]

hi @Olli781 , have you already uncommented de_DE local in /etc/locale.gen and run the command locale-gen?

[Olli781]

Hi MattBlack85,
I ran the command sudo locale-gen and uncommented de_DE beforehand:
Generating locales...
de_DE.UTF-8... done
de_DE.ISO-8859-1... done
de_DE.ISO-8859-15@euro... done
Generation complete.

The error with PHD has disappeared. Unfortunately, the error still appears in the terminal:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "de",
LC_ALL = (unset),
LC_CTYPE = "en_US.UTF-8",
LC_NUMERIC = "de_DE.UTF-8",
LC_COLLATE = (unset),
LC_TIME = "de_DE.UTF-8",
LC_MESSAGES = (unset),
LC_MONETARY = "de_DE.UTF-8",
LC_ADDRESS = "de_DE.UTF-8",
LC_IDENTIFICATION = (unset),
LC_MEASUREMENT = "de_DE.UTF-8",
LC_PAPER = "de_DE.UTF-8",
LC_TELEPHONE = "de_DE.UTF-8",
LC_NAME = "de_DE.UTF-8",
LANG = "de_DE.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("de_DE.UTF-8").

[Olli781]

I solved the problem:
en_US.UTF-8 UTF-8 must also remain uncommented.