• From: Germany, Kiel
  • Registered: 06/26/2025
  • Posts: 12

Topic: Error log: 4 Domain file "./lang/C/LC_MESSAGES/C.po" not found.

I have endless errors like this "4 Domain file "./lang/C/LC_MESSAGES/C.po" not found." in tmp/errors.log. Some of them in a variation "4 Domain file "../../lang/C/LC_MESSAGES/C.po" not found."
I have already tried to set the language on en_US in php.ini
intl.default_locale = en_US
but the error still exists. Does anybody know how to fix this. I have a standard installation of FA. The only language file available is lang/en_US/LC_MESSAGES/en_US.mo. How can I get FA to use the compiled PO file and change language settings to en_US?

  • From: Ecuador
  • Registered: 12/05/2019
  • Posts: 9

Re: Error log: 4 Domain file "./lang/C/LC_MESSAGES/C.po" not found.

Hi alex1452.
The system is trying to reach the files from the default language which is coded as 'C', the reason why you are having such issue I don`t know, but the simpliest way to fix that error is coping the files in the 'lang/en_US' folder and rename that folder as 'lang/C' also all the contents in the folder LC_MESSAGES to C.po, C.mo let us know how it went.

  • From: USA, AZ, Phoenix
  • Registered: 10/02/2024
  • Posts: 17

Re: Error log: 4 Domain file "./lang/C/LC_MESSAGES/C.po" not found.

That error pops up because your app is looking for .po files instead of compiled .mo files, or it’s searching the wrong locale (C is the fallback locale). Setting intl.default_locale doesn’t fix missing gettext files.

Stotle's Website

  • From: Singapore, India, Chennai
  • Registered: 05/02/2009
  • Posts: 6,260

Re: Error log: 4 Domain file "./lang/C/LC_MESSAGES/C.po" not found.

Take a look at the php.ini setting:

intl.default_locale.

https://server.hk/blog/15807/

apmuthu's Website