multilingual problem?

[webtiryaki]

Hello, why does Smf give a warning when using multiple languages?
website: https://f1wm.net/index.php

Warning: This document appears to be written in Turkish but the html start tag has lang="en-US". Consider using lang="tr" (or variant) instead.

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[Arantor]

Are you using the Turkish language pack? There should be an entry early on in index.turkish.php for this.

[webtiryaki]

Are you using the Turkish language pack? There should be an entry early on in index.turkish.php for this.

@Arantor I use German, Turkish, English. The problem is that it does not give warnings in languages other than English.

[Arantor]

So, exactly as I said, you need to look at the language pack you're using.

$txt['lang_locale'] defines what gets used for that lang= entry. Check your language files have this defined. And if you're using the validator when the site's using the English language pack you'll get the English lang_locale entry (as you have there)...

I'm not sure what you hope for SMF to do - switch language and you get the right code.