Mac OSX - iterm2 (locale error)

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Description

You can encounter error messages like this one:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "de_DE.UTF-8",
LANG = "C"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "de_DE.UTF-8",
LANG = "C"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Solution

Go to iterm2 Preferences -> Profiles -> Terminal and disable option Set locale variables automatically.