Locale fi_FI.UTF-8 creates warning

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This one is new when I entered inside web_only.yml:

root@foorumi-hel:/var/discourse# ./launcher enter web_only
x86_64 arch detected.
bash: warning: setlocale: LC_CTYPE: cannot change locale (fi_FI.UTF-8): No such file or directory
bash: warning: setlocale: LC_COLLATE: cannot change locale (fi_FI.UTF-8): No such file or directory
bash: warning: setlocale: LC_CTYPE: cannot change locale (fi_FI.UTF-8): No such file or directory
bash: warning: setlocale: LC_COLLATE: cannot change locale (fi_FI.UTF-8): No such file or directory

Those are coming from this, I reckon:

env:
 # LC_ALL: fi_FI.UTC-8
  LANG: fi_FI.UTF-8
  LANGUAGE: fi_FI.UTF-8

Do I need to loose my good night sleep because of that?