====== perl: warning: Setting locale failed. ======

Warning is shown on remote system when user is connected using SSH (user host locale are forwarded to remote machine which doesn't support it)

<code bash>
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_TIME = "pl_PL.UTF-8",
	LC_MONETARY = "pl_PL.UTF-8",
	LC_CTYPE = "pl_PL.UTF-8",
	LC_COLLATE = "pl_PL.UTF-8",
	LC_MEASUREMENT = "pl_PL.UTF-8",
	LC_NUMERIC = "pl_PL.UTF-8",
	LC_PAPER = ""pl_PL"",
	LANG = "C"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
</code>

On remote machine type:
<code bash>
locale-gen pl_PL.ISO-8859-2
locale-gen pl_PL.UTF-8
dpkg-reconfigure locales
</code>