images with incorrect aspect ratio

Hi,

my product pages display warnings about incorrenct aspect for shield icon (shield-20.png) near reviews. Plugin is updated, never seen this before (using plugin for over 1 year), maybe something happened after last update?

Here is a lighthouse report and warning :
https://pagespeed.web.dev/report?url=https%3A%2F%2Fliveflooring.com%2Fprodukt%2Fplyta-gumowa-proflex-sbr
– methods section

Thank you in advance

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