Error · scope-attr-valid
Table headers with an invalid scope
Lighthouse / axe call it: scope attribute should be used correctly
Header cells declare a scope value that doesn't exist.
Who it leaves out: blind people (screen readers)
How to fix it
Use scope="col" or "row". Developer task.
In the code
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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.