A composite control is missing its parts
aria-required-children
Some elements declare themselves as a list, menu or tab set but do not contain the pieces that structure requires.
Who this affects
Screen reader users, whose software cannot announce or navigate the control properly.
Fix it in WordPress
Nearly always a menu, tabs or accordion widget. Update the plugin. This has been fixed in newer versions of most builders.
What the fix is, technically
Add the required child roles, or drop the parent role.
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