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Error · valid-lang

Invalid language on part of the page

A section declares a language code that doesn't exist.

Who it leaves out: blind people (screen readers)

How to fix it

Use a valid code. Code included.

In the code

Use a valid BCP 47 code in the lang attribute of this element, e.g. lang="fr".

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Related errors

Automated testing covers roughly half of WCAG criteria; a full conformance claim also requires manual review. Technical information, not legal advice.