Table headers in a data table must refer to data cells
Moderateth-has-data-cells
What it checks
Ensure that <th> elements and elements with role=columnheader/rowheader have data cells they describe
How to fix it
Review and fix this accessibility issue following WCAG guidelines
WCAG
Success criteria 1.3.1. See the WCAG 2.2 quick reference.
More detail: Deque University's page on this rule.