Custom controls have ARIA roles
To check that all custom interactive controls have appropriate ARIA roles, test the page using either the Chrome DevTools accessibility pane or a screen reader.
If you get this error, check Custom Code or Element Settings > Custom Attributes.
Google Lighthouse says
Check that all custom controls have an appropriate role and any required ARIA attributes that confer their properties and state. For example, a custom checkbox needs a role="checkbox" and aria-checked="true|false" to properly convey its state.