Error · th-has-data-cells
Table headers with no data
Lighthouse / axe call it: Table headers in a data table must refer to data cells · <th> elements and elements with [role="columnheader"/"rowheader"] do not have data cells they describe
A header cell has no cells under it; screen readers announce an empty column.
Who it leaves out: blind people (screen readers)
How to fix it
Developer task; details below.
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.