aria-controls attribute typo

When I view my websites accessibility on pagespeed I found that the aria-controls attribute is missing the last letter “s” and creating an error with the accessibility.

https://pagespeed.web.dev/analysis/https-littlelambsden-com/savlupw8ut?form_factor=mobile

Here is a sample of the code from the website littlelambsden.com from the accordion block.

<div class="gs-accordion-item__title" aria-expanded="true" role="button" tabindex="0" aria-control="gspb-accordion-item-content-gsbp-1cb22234-5aea">

Support on correct spelling is found here at https://www.w3.org/TR/wai-aria-1.1/#aria-controls

The page I need help with: [log in to see the link]