Raspberry Pi "warning: Setting locale failed"

     หากใครที่เพิ่งลง raspberry pi มาใหม่แล้วเจอ warning

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings: 

LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "UTF-8",
LANG = "en_US.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_ALL to default locale: No such file or directory

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